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Finding the Fourth Proportional to 347,597.60, 521,569.20 and 137,242.40

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Solution

The fourth proportional to 347,597.60, 521,569.20 and 137,242.40 is: 205,931.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,597.60 : 521,569.20 = 137,242.40 : x
  2. Step 2: Convert to fraction form
    347,597.60/521,569.20 = 137,242.40/x
  3. Step 3: Cross multiply
    347,597.60x = 521,569.20 × 137,242.40
  4. Step 4: Simplify right side
    347,597.60x = 71,581,408,774.08
  5. Step 5: Solve for x
    x = 71,581,408,774.08/347,597.60
  6. Step 6: Final answer
    x = 205,931.83

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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.