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Finding the Fourth Proportional to 312,407.27, 431,124.08 and 169,167.32

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Solution

The fourth proportional to 312,407.27, 431,124.08 and 169,167.32 is: 233,452.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,407.27 : 431,124.08 = 169,167.32 : x
  2. Step 2: Convert to fraction form
    312,407.27/431,124.08 = 169,167.32/x
  3. Step 3: Cross multiply
    312,407.27x = 431,124.08 × 169,167.32
  4. Step 4: Simplify right side
    312,407.27x = 72,932,105,201.07
  5. Step 5: Solve for x
    x = 72,932,105,201.07/312,407.27
  6. Step 6: Final answer
    x = 233,452.01

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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.