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Finding the Fourth Proportional to 238,641.60, 329,319.09 and 129,742.50

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Solution

The fourth proportional to 238,641.60, 329,319.09 and 129,742.50 is: 179,041.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,641.60 : 329,319.09 = 129,742.50 : x
  2. Step 2: Convert to fraction form
    238,641.60/329,319.09 = 129,742.50/x
  3. Step 3: Cross multiply
    238,641.60x = 329,319.09 × 129,742.50
  4. Step 4: Simplify right side
    238,641.60x = 42,726,682,034.33
  5. Step 5: Solve for x
    x = 42,726,682,034.33/238,641.60
  6. Step 6: Final answer
    x = 179,041.22

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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.