Home / 258,826,755,266.80-388,240,132,900.20-72,711,865,538.80

Finding the Fourth Proportional to 258,826,755,266.80, 388,240,132,900.20 and 72,711,865,538.80

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Solution

The fourth proportional to 258,826,755,266.80, 388,240,132,900.20 and 72,711,865,538.80 is: 109,067,798,308.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,826,755,266.80 : 388,240,132,900.20 = 72,711,865,538.80 : x
  2. Step 2: Convert to fraction form
    258,826,755,266.80/388,240,132,900.20 = 72,711,865,538.80/x
  3. Step 3: Cross multiply
    258,826,755,266.80x = 388,240,132,900.20 × 72,711,865,538.80
  4. Step 4: Simplify right side
    258,826,755,266.80x = 28,229,664,340,205,184,745,472
  5. Step 5: Solve for x
    x = 28,229,664,340,205,184,745,472/258,826,755,266.80
  6. Step 6: Final answer
    x = 109,067,798,308.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.