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Finding the Fourth Proportional to 539,058.60, 807,615.90 and 257,956.20

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Solution

The fourth proportional to 539,058.60, 807,615.90 and 257,956.20 is: 386,469.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,058.60 : 807,615.90 = 257,956.20 : x
  2. Step 2: Convert to fraction form
    539,058.60/807,615.90 = 257,956.20/x
  3. Step 3: Cross multiply
    539,058.60x = 807,615.90 × 257,956.20
  4. Step 4: Simplify right side
    539,058.60x = 208,329,528,623.58
  5. Step 5: Solve for x
    x = 208,329,528,623.58/539,058.60
  6. Step 6: Final answer
    x = 386,469.17

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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.