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Finding the Fourth Proportional to 231,765.76, 319,841.28 and 151,244.80

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Solution

The fourth proportional to 231,765.76, 319,841.28 and 151,244.80 is: 208,720.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,765.76 : 319,841.28 = 151,244.80 : x
  2. Step 2: Convert to fraction form
    231,765.76/319,841.28 = 151,244.80/x
  3. Step 3: Cross multiply
    231,765.76x = 319,841.28 × 151,244.80
  4. Step 4: Simplify right side
    231,765.76x = 48,374,330,425.34
  5. Step 5: Solve for x
    x = 48,374,330,425.34/231,765.76
  6. Step 6: Final answer
    x = 208,720.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.