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Finding the Fourth Proportional to 539,142.90, 808,575.90 and 159,973.95

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Solution

The fourth proportional to 539,142.90, 808,575.90 and 159,973.95 is: 239,919.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,142.90 : 808,575.90 = 159,973.95 : x
  2. Step 2: Convert to fraction form
    539,142.90/808,575.90 = 159,973.95/x
  3. Step 3: Cross multiply
    539,142.90x = 808,575.90 × 159,973.95
  4. Step 4: Simplify right side
    539,142.90x = 129,351,080,597.81
  5. Step 5: Solve for x
    x = 129,351,080,597.81/539,142.90
  6. Step 6: Final answer
    x = 239,919.84

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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.