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Finding the Fourth Proportional to 386,979.84, 580,537.80 and 176,639.04

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Solution

The fourth proportional to 386,979.84, 580,537.80 and 176,639.04 is: 264,989.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,979.84 : 580,537.80 = 176,639.04 : x
  2. Step 2: Convert to fraction form
    386,979.84/580,537.80 = 176,639.04/x
  3. Step 3: Cross multiply
    386,979.84x = 580,537.80 × 176,639.04
  4. Step 4: Simplify right side
    386,979.84x = 102,545,639,675.71
  5. Step 5: Solve for x
    x = 102,545,639,675.71/386,979.84
  6. Step 6: Final answer
    x = 264,989.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.