Home / 315,787.12-435,789.30-172,547.16

Finding the Fourth Proportional to 315,787.12, 435,789.30 and 172,547.16

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Solution

The fourth proportional to 315,787.12, 435,789.30 and 172,547.16 is: 238,116.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,787.12 : 435,789.30 = 172,547.16 : x
  2. Step 2: Convert to fraction form
    315,787.12/435,789.30 = 172,547.16/x
  3. Step 3: Cross multiply
    315,787.12x = 435,789.30 × 172,547.16
  4. Step 4: Simplify right side
    315,787.12x = 75,194,206,073.39
  5. Step 5: Solve for x
    x = 75,194,206,073.39/315,787.12
  6. Step 6: Final answer
    x = 238,116.76

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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.