Home / 429,392.12-644,189.32-129,875.18

Finding the Fourth Proportional to 429,392.12, 644,189.32 and 129,875.18

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Solution

The fourth proportional to 429,392.12, 644,189.32 and 129,875.18 is: 194,843.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,392.12 : 644,189.32 = 129,875.18 : x
  2. Step 2: Convert to fraction form
    429,392.12/644,189.32 = 129,875.18/x
  3. Step 3: Cross multiply
    429,392.12x = 644,189.32 × 129,875.18
  4. Step 4: Simplify right side
    429,392.12x = 83,664,200,668.13
  5. Step 5: Solve for x
    x = 83,664,200,668.13/429,392.12
  6. Step 6: Final answer
    x = 194,843.36

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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.