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Finding the Fourth Proportional to 315,634.01, 435,574.91 and 172,394.39

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Solution

The fourth proportional to 315,634.01, 435,574.91 and 172,394.39 is: 237,904.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,634.01 : 435,574.91 = 172,394.39 : x
  2. Step 2: Convert to fraction form
    315,634.01/435,574.91 = 172,394.39/x
  3. Step 3: Cross multiply
    315,634.01x = 435,574.91 × 172,394.39
  4. Step 4: Simplify right side
    315,634.01x = 75,090,667,868.91
  5. Step 5: Solve for x
    x = 75,090,667,868.91/315,634.01
  6. Step 6: Final answer
    x = 237,904.24

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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.