Home / 393,637.76-543,084.69-238,639.04

Finding the Fourth Proportional to 393,637.76, 543,084.69 and 238,639.04

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Solution

The fourth proportional to 393,637.76, 543,084.69 and 238,639.04 is: 329,239.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,637.76 : 543,084.69 = 238,639.04 : x
  2. Step 2: Convert to fraction form
    393,637.76/543,084.69 = 238,639.04/x
  3. Step 3: Cross multiply
    393,637.76x = 543,084.69 × 238,639.04
  4. Step 4: Simplify right side
    393,637.76x = 129,601,209,276.34
  5. Step 5: Solve for x
    x = 129,601,209,276.34/393,637.76
  6. Step 6: Final answer
    x = 329,239.78

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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.