Home / 429,248.97-643,939.19-140,969.90

Finding the Fourth Proportional to 429,248.97, 643,939.19 and 140,969.90

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Solution

The fourth proportional to 429,248.97, 643,939.19 and 140,969.90 is: 211,476.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,248.97 : 643,939.19 = 140,969.90 : x
  2. Step 2: Convert to fraction form
    429,248.97/643,939.19 = 140,969.90/x
  3. Step 3: Cross multiply
    429,248.97x = 643,939.19 × 140,969.90
  4. Step 4: Simplify right side
    429,248.97x = 90,776,039,295.84
  5. Step 5: Solve for x
    x = 90,776,039,295.84/429,248.97
  6. Step 6: Final answer
    x = 211,476.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.