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Finding the Fourth Proportional to 539,144.66, 807,918.27 and 218,907.11

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Solution

The fourth proportional to 539,144.66, 807,918.27 and 218,907.11 is: 328,036.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,144.66 : 807,918.27 = 218,907.11 : x
  2. Step 2: Convert to fraction form
    539,144.66/807,918.27 = 218,907.11/x
  3. Step 3: Cross multiply
    539,144.66x = 807,918.27 × 218,907.11
  4. Step 4: Simplify right side
    539,144.66x = 176,859,053,601.90
  5. Step 5: Solve for x
    x = 176,859,053,601.90/539,144.66
  6. Step 6: Final answer
    x = 328,036.36

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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.