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Finding the Fourth Proportional to 539,063.60, 807,623.40 and 257,961.20

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Solution

The fourth proportional to 539,063.60, 807,623.40 and 257,961.20 is: 386,476.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,063.60 : 807,623.40 = 257,961.20 : x
  2. Step 2: Convert to fraction form
    539,063.60/807,623.40 = 257,961.20/x
  3. Step 3: Cross multiply
    539,063.60x = 807,623.40 × 257,961.20
  4. Step 4: Simplify right side
    539,063.60x = 208,335,501,412.08
  5. Step 5: Solve for x
    x = 208,335,501,412.08/539,063.60
  6. Step 6: Final answer
    x = 386,476.66

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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.