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Finding the Fourth Proportional to 236,748, 326,710.31 and 129,318.06

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Solution

The fourth proportional to 236,748, 326,710.31 and 129,318.06 is: 178,457.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,748 : 326,710.31 = 129,318.06 : x
  2. Step 2: Convert to fraction form
    236,748/326,710.31 = 129,318.06/x
  3. Step 3: Cross multiply
    236,748x = 326,710.31 × 129,318.06
  4. Step 4: Simplify right side
    236,748x = 42,249,542,824.61
  5. Step 5: Solve for x
    x = 42,249,542,824.61/236,748
  6. Step 6: Final answer
    x = 178,457.87

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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.