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Finding the Fourth Proportional to 272,613.60, 408,920.40 and 260,366.40

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Solution

The fourth proportional to 272,613.60, 408,920.40 and 260,366.40 is: 390,549.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,613.60 : 408,920.40 = 260,366.40 : x
  2. Step 2: Convert to fraction form
    272,613.60/408,920.40 = 260,366.40/x
  3. Step 3: Cross multiply
    272,613.60x = 408,920.40 × 260,366.40
  4. Step 4: Simplify right side
    272,613.60x = 106,469,132,434.56
  5. Step 5: Solve for x
    x = 106,469,132,434.56/272,613.60
  6. Step 6: Final answer
    x = 390,549.60

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1.5x scale

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.