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Finding the Fourth Proportional to 519,534.80, 778,870.20 and 220,245.20

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Solution

The fourth proportional to 519,534.80, 778,870.20 and 220,245.20 is: 330,184.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,534.80 : 778,870.20 = 220,245.20 : x
  2. Step 2: Convert to fraction form
    519,534.80/778,870.20 = 220,245.20/x
  3. Step 3: Cross multiply
    519,534.80x = 778,870.20 × 220,245.20
  4. Step 4: Simplify right side
    519,534.80x = 171,542,422,973.04
  5. Step 5: Solve for x
    x = 171,542,422,973.04/519,534.80
  6. Step 6: Final answer
    x = 330,184.66

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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.