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Finding the Fourth Proportional to 539,618.56, 809,431.10 and 240,028.72

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Solution

The fourth proportional to 539,618.56, 809,431.10 and 240,028.72 is: 360,044.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,618.56 : 809,431.10 = 240,028.72 : x
  2. Step 2: Convert to fraction form
    539,618.56/809,431.10 = 240,028.72/x
  3. Step 3: Cross multiply
    539,618.56x = 809,431.10 × 240,028.72
  4. Step 4: Simplify right side
    539,618.56x = 194,286,710,861.19
  5. Step 5: Solve for x
    x = 194,286,710,861.19/539,618.56
  6. Step 6: Final answer
    x = 360,044.53

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Similar ratio
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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.