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Finding the Fourth Proportional to 347,357.60, 521,209.20 and 137,002.40

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Solution

The fourth proportional to 347,357.60, 521,209.20 and 137,002.40 is: 205,571.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,357.60 : 521,209.20 = 137,002.40 : x
  2. Step 2: Convert to fraction form
    347,357.60/521,209.20 = 137,002.40/x
  3. Step 3: Cross multiply
    347,357.60x = 521,209.20 × 137,002.40
  4. Step 4: Simplify right side
    347,357.60x = 71,406,911,302.08
  5. Step 5: Solve for x
    x = 71,406,911,302.08/347,357.60
  6. Step 6: Final answer
    x = 205,571.75

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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.