Home / 315,394.38-435,246.03-172,151.28

Finding the Fourth Proportional to 315,394.38, 435,246.03 and 172,151.28

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Solution

The fourth proportional to 315,394.38, 435,246.03 and 172,151.28 is: 237,569.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,394.38 : 435,246.03 = 172,151.28 : x
  2. Step 2: Convert to fraction form
    315,394.38/435,246.03 = 172,151.28/x
  3. Step 3: Cross multiply
    315,394.38x = 435,246.03 × 172,151.28
  4. Step 4: Simplify right side
    315,394.38x = 74,928,161,179.42
  5. Step 5: Solve for x
    x = 74,928,161,179.42/315,394.38
  6. Step 6: Final answer
    x = 237,569.74

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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.