Home / 429,166.42-643,498.67-129,557.14

Finding the Fourth Proportional to 429,166.42, 643,498.67 and 129,557.14

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Solution

The fourth proportional to 429,166.42, 643,498.67 and 129,557.14 is: 194,259.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,166.42 : 643,498.67 = 129,557.14 : x
  2. Step 2: Convert to fraction form
    429,166.42/643,498.67 = 129,557.14/x
  3. Step 3: Cross multiply
    429,166.42x = 643,498.67 × 129,557.14
  4. Step 4: Simplify right side
    429,166.42x = 83,369,847,279.00
  5. Step 5: Solve for x
    x = 83,369,847,279.00/429,166.42
  6. Step 6: Final answer
    x = 194,259.95

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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.