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Finding the Fourth Proportional to 432,987.60, 649,366.20 and 133,467.60

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Solution

The fourth proportional to 432,987.60, 649,366.20 and 133,467.60 is: 200,165.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,987.60 : 649,366.20 = 133,467.60 : x
  2. Step 2: Convert to fraction form
    432,987.60/649,366.20 = 133,467.60/x
  3. Step 3: Cross multiply
    432,987.60x = 649,366.20 × 133,467.60
  4. Step 4: Simplify right side
    432,987.60x = 86,669,348,235.12
  5. Step 5: Solve for x
    x = 86,669,348,235.12/432,987.60
  6. Step 6: Final answer
    x = 200,165.89

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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.