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Finding the Fourth Proportional to 238,715.28, 329,420.52 and 131,285.28

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Solution

The fourth proportional to 238,715.28, 329,420.52 and 131,285.28 is: 181,170.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,715.28 : 329,420.52 = 131,285.28 : x
  2. Step 2: Convert to fraction form
    238,715.28/329,420.52 = 131,285.28/x
  3. Step 3: Cross multiply
    238,715.28x = 329,420.52 × 131,285.28
  4. Step 4: Simplify right side
    238,715.28x = 43,248,065,205.95
  5. Step 5: Solve for x
    x = 43,248,065,205.95/238,715.28
  6. Step 6: Final answer
    x = 181,170.08

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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.