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Finding the Fourth Proportional to 231,358.40, 346,864.80 and 98,129.60

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Solution

The fourth proportional to 231,358.40, 346,864.80 and 98,129.60 is: 147,121.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,358.40 : 346,864.80 = 98,129.60 : x
  2. Step 2: Convert to fraction form
    231,358.40/346,864.80 = 98,129.60/x
  3. Step 3: Cross multiply
    231,358.40x = 346,864.80 × 98,129.60
  4. Step 4: Simplify right side
    231,358.40x = 34,037,704,078.08
  5. Step 5: Solve for x
    x = 34,037,704,078.08/231,358.40
  6. Step 6: Final answer
    x = 147,121.11

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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.