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Finding the Fourth Proportional to 315,527.70, 435,445.95 and 172,301.10

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Solution

The fourth proportional to 315,527.70, 435,445.95 and 172,301.10 is: 237,785.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,527.70 : 435,445.95 = 172,301.10 : x
  2. Step 2: Convert to fraction form
    315,527.70/435,445.95 = 172,301.10/x
  3. Step 3: Cross multiply
    315,527.70x = 435,445.95 × 172,301.10
  4. Step 4: Simplify right side
    315,527.70x = 75,027,816,175.55
  5. Step 5: Solve for x
    x = 75,027,816,175.55/315,527.70
  6. Step 6: Final answer
    x = 237,785.20

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1.5x scale

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.