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Finding the Fourth Proportional to 231,599.34, 319,606.61 and 129,624.39

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Solution

The fourth proportional to 231,599.34, 319,606.61 and 129,624.39 is: 178,881.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,599.34 : 319,606.61 = 129,624.39 : x
  2. Step 2: Convert to fraction form
    231,599.34/319,606.61 = 129,624.39/x
  3. Step 3: Cross multiply
    231,599.34x = 319,606.61 × 129,624.39
  4. Step 4: Simplify right side
    231,599.34x = 41,428,811,213.10
  5. Step 5: Solve for x
    x = 41,428,811,213.10/231,599.34
  6. Step 6: Final answer
    x = 178,881.39

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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.