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Finding the Fourth Proportional to 342,527.80, 513,791.70 and 155,539.30

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Solution

The fourth proportional to 342,527.80, 513,791.70 and 155,539.30 is: 233,308.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,527.80 : 513,791.70 = 155,539.30 : x
  2. Step 2: Convert to fraction form
    342,527.80/513,791.70 = 155,539.30/x
  3. Step 3: Cross multiply
    342,527.80x = 513,791.70 × 155,539.30
  4. Step 4: Simplify right side
    342,527.80x = 79,914,801,363.81
  5. Step 5: Solve for x
    x = 79,914,801,363.81/342,527.80
  6. Step 6: Final answer
    x = 233,308.95

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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.