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Finding the Fourth Proportional to 363,972.60, 545,699.70 and 139,246.20

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Solution

The fourth proportional to 363,972.60, 545,699.70 and 139,246.20 is: 208,770.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,972.60 : 545,699.70 = 139,246.20 : x
  2. Step 2: Convert to fraction form
    363,972.60/545,699.70 = 139,246.20/x
  3. Step 3: Cross multiply
    363,972.60x = 545,699.70 × 139,246.20
  4. Step 4: Simplify right side
    363,972.60x = 75,986,609,566.14
  5. Step 5: Solve for x
    x = 75,986,609,566.14/363,972.60
  6. Step 6: Final answer
    x = 208,770.14

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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.