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Finding the Fourth Proportional to 539,056.60, 807,612.90 and 257,954.20

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Solution

The fourth proportional to 539,056.60, 807,612.90 and 257,954.20 is: 386,466.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,056.60 : 807,612.90 = 257,954.20 : x
  2. Step 2: Convert to fraction form
    539,056.60/807,612.90 = 257,954.20/x
  3. Step 3: Cross multiply
    539,056.60x = 807,612.90 × 257,954.20
  4. Step 4: Simplify right side
    539,056.60x = 208,327,139,529.18
  5. Step 5: Solve for x
    x = 208,327,139,529.18/539,056.60
  6. Step 6: Final answer
    x = 386,466.17

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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.