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Finding the Fourth Proportional to 258,920.80, 388,381.20 and 152,195.20

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Solution

The fourth proportional to 258,920.80, 388,381.20 and 152,195.20 is: 228,292.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,920.80 : 388,381.20 = 152,195.20 : x
  2. Step 2: Convert to fraction form
    258,920.80/388,381.20 = 152,195.20/x
  3. Step 3: Cross multiply
    258,920.80x = 388,381.20 × 152,195.20
  4. Step 4: Simplify right side
    258,920.80x = 59,109,754,410.24
  5. Step 5: Solve for x
    x = 59,109,754,410.24/258,920.80
  6. Step 6: Final answer
    x = 228,292.80

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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.