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Finding the Fourth Proportional to 238,904.32, 329,688 and 131,482

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Solution

The fourth proportional to 238,904.32, 329,688 and 131,482 is: 181,445.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,904.32 : 329,688 = 131,482 : x
  2. Step 2: Convert to fraction form
    238,904.32/329,688 = 131,482/x
  3. Step 3: Cross multiply
    238,904.32x = 329,688 × 131,482
  4. Step 4: Simplify right side
    238,904.32x = 43,348,037,616
  5. Step 5: Solve for x
    x = 43,348,037,616/238,904.32
  6. Step 6: Final answer
    x = 181,445.18

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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.