Home / 426,385.62-639,201.96-173,877.30

Finding the Fourth Proportional to 426,385.62, 639,201.96 and 173,877.30

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Solution

The fourth proportional to 426,385.62, 639,201.96 and 173,877.30 is: 260,662.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,385.62 : 639,201.96 = 173,877.30 : x
  2. Step 2: Convert to fraction form
    426,385.62/639,201.96 = 173,877.30/x
  3. Step 3: Cross multiply
    426,385.62x = 639,201.96 × 173,877.30
  4. Step 4: Simplify right side
    426,385.62x = 111,142,710,959.51
  5. Step 5: Solve for x
    x = 111,142,710,959.51/426,385.62
  6. Step 6: Final answer
    x = 260,662.43

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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.