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Finding the Fourth Proportional to 315,634.33, 435,575.37 and 172,394.71

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Solution

The fourth proportional to 315,634.33, 435,575.37 and 172,394.71 is: 237,904.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,634.33 : 435,575.37 = 172,394.71 : x
  2. Step 2: Convert to fraction form
    315,634.33/435,575.37 = 172,394.71/x
  3. Step 3: Cross multiply
    315,634.33x = 435,575.37 × 172,394.71
  4. Step 4: Simplify right side
    315,634.33x = 75,090,891,601.95
  5. Step 5: Solve for x
    x = 75,090,891,601.95/315,634.33
  6. Step 6: Final answer
    x = 237,904.70

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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.