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Finding the Fourth Proportional to 435,481.40, 653,222.16 and 135,987.62

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Solution

The fourth proportional to 435,481.40, 653,222.16 and 135,987.62 is: 203,981.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,481.40 : 653,222.16 = 135,987.62 : x
  2. Step 2: Convert to fraction form
    435,481.40/653,222.16 = 135,987.62/x
  3. Step 3: Cross multiply
    435,481.40x = 653,222.16 × 135,987.62
  4. Step 4: Simplify right side
    435,481.40x = 88,830,126,869.66
  5. Step 5: Solve for x
    x = 88,830,126,869.66/435,481.40
  6. Step 6: Final answer
    x = 203,981.45

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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.