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Finding the Fourth Proportional to 493,359.40, 740,039.10 and 138,433.60

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Solution

The fourth proportional to 493,359.40, 740,039.10 and 138,433.60 is: 207,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,359.40 : 740,039.10 = 138,433.60 : x
  2. Step 2: Convert to fraction form
    493,359.40/740,039.10 = 138,433.60/x
  3. Step 3: Cross multiply
    493,359.40x = 740,039.10 × 138,433.60
  4. Step 4: Simplify right side
    493,359.40x = 102,446,276,753.76
  5. Step 5: Solve for x
    x = 102,446,276,753.76/493,359.40
  6. Step 6: Final answer
    x = 207,650.40

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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.