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Finding the Fourth Proportional to 307,645.38, 424,549.78 and 171,677.88

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Solution

The fourth proportional to 307,645.38, 424,549.78 and 171,677.88 is: 236,915.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,645.38 : 424,549.78 = 171,677.88 : x
  2. Step 2: Convert to fraction form
    307,645.38/424,549.78 = 171,677.88/x
  3. Step 3: Cross multiply
    307,645.38x = 424,549.78 × 171,677.88
  4. Step 4: Simplify right side
    307,645.38x = 72,885,805,755.67
  5. Step 5: Solve for x
    x = 72,885,805,755.67/307,645.38
  6. Step 6: Final answer
    x = 236,915.00

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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.