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Finding the Fourth Proportional to 315,513.48, 435,410.28 and 172,277.04

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Solution

The fourth proportional to 315,513.48, 435,410.28 and 172,277.04 is: 237,743.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,513.48 : 435,410.28 = 172,277.04 : x
  2. Step 2: Convert to fraction form
    315,513.48/435,410.28 = 172,277.04/x
  3. Step 3: Cross multiply
    315,513.48x = 435,410.28 × 172,277.04
  4. Step 4: Simplify right side
    315,513.48x = 75,011,194,223.97
  5. Step 5: Solve for x
    x = 75,011,194,223.97/315,513.48
  6. Step 6: Final answer
    x = 237,743.23

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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.