Home / 429,674.19-644,544.09-130,179.58

Finding the Fourth Proportional to 429,674.19, 644,544.09 and 130,179.58

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Solution

The fourth proportional to 429,674.19, 644,544.09 and 130,179.58 is: 195,279.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,674.19 : 644,544.09 = 130,179.58 : x
  2. Step 2: Convert to fraction form
    429,674.19/644,544.09 = 130,179.58/x
  3. Step 3: Cross multiply
    429,674.19x = 644,544.09 × 130,179.58
  4. Step 4: Simplify right side
    429,674.19x = 83,906,478,927.68
  5. Step 5: Solve for x
    x = 83,906,478,927.68/429,674.19
  6. Step 6: Final answer
    x = 195,279.31

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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.