Home / 429,868.17-644,895.42-130,371.75

Finding the Fourth Proportional to 429,868.17, 644,895.42 and 130,371.75

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Solution

The fourth proportional to 429,868.17, 644,895.42 and 130,371.75 is: 195,585.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,868.17 : 644,895.42 = 130,371.75 : x
  2. Step 2: Convert to fraction form
    429,868.17/644,895.42 = 130,371.75/x
  3. Step 3: Cross multiply
    429,868.17x = 644,895.42 × 130,371.75
  4. Step 4: Simplify right side
    429,868.17x = 84,076,144,472.39
  5. Step 5: Solve for x
    x = 84,076,144,472.39/429,868.17
  6. Step 6: Final answer
    x = 195,585.88

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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.