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Finding the Fourth Proportional to 240,138.59, 360,207.88 and 90,412.47

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Solution

The fourth proportional to 240,138.59, 360,207.88 and 90,412.47 is: 135,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,138.59 : 360,207.88 = 90,412.47 : x
  2. Step 2: Convert to fraction form
    240,138.59/360,207.88 = 90,412.47/x
  3. Step 3: Cross multiply
    240,138.59x = 360,207.88 × 90,412.47
  4. Step 4: Simplify right side
    240,138.59x = 32,567,281,891.16
  5. Step 5: Solve for x
    x = 32,567,281,891.16/240,138.59
  6. Step 6: Final answer
    x = 135,618.70

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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.