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Finding the Fourth Proportional to 539,109.80, 808,551.30 and 272,619.80

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Solution

The fourth proportional to 539,109.80, 808,551.30 and 272,619.80 is: 408,872.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,109.80 : 808,551.30 = 272,619.80 : x
  2. Step 2: Convert to fraction form
    539,109.80/808,551.30 = 272,619.80/x
  3. Step 3: Cross multiply
    539,109.80x = 808,551.30 × 272,619.80
  4. Step 4: Simplify right side
    539,109.80x = 220,427,093,695.74
  5. Step 5: Solve for x
    x = 220,427,093,695.74/539,109.80
  6. Step 6: Final answer
    x = 408,872.36

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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.