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Finding the Fourth Proportional to 539,062.60, 807,621.90 and 257,960.20

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Solution

The fourth proportional to 539,062.60, 807,621.90 and 257,960.20 is: 386,475.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,062.60 : 807,621.90 = 257,960.20 : x
  2. Step 2: Convert to fraction form
    539,062.60/807,621.90 = 257,960.20/x
  3. Step 3: Cross multiply
    539,062.60x = 807,621.90 × 257,960.20
  4. Step 4: Simplify right side
    539,062.60x = 208,334,306,848.38
  5. Step 5: Solve for x
    x = 208,334,306,848.38/539,062.60
  6. Step 6: Final answer
    x = 386,475.16

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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.