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Finding the Fourth Proportional to 307,335.86, 424,113 and 169,520.25

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Solution

The fourth proportional to 307,335.86, 424,113 and 169,520.25 is: 233,932.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,335.86 : 424,113 = 169,520.25 : x
  2. Step 2: Convert to fraction form
    307,335.86/424,113 = 169,520.25/x
  3. Step 3: Cross multiply
    307,335.86x = 424,113 × 169,520.25
  4. Step 4: Simplify right side
    307,335.86x = 71,895,741,788.25
  5. Step 5: Solve for x
    x = 71,895,741,788.25/307,335.86
  6. Step 6: Final answer
    x = 233,932.16

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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.