Home / 426,500.12-639,197.96-173,486.90

Finding the Fourth Proportional to 426,500.12, 639,197.96 and 173,486.90

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Solution

The fourth proportional to 426,500.12, 639,197.96 and 173,486.90 is: 260,005.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,500.12 : 639,197.96 = 173,486.90 : x
  2. Step 2: Convert to fraction form
    426,500.12/639,197.96 = 173,486.90/x
  3. Step 3: Cross multiply
    426,500.12x = 639,197.96 × 173,486.90
  4. Step 4: Simplify right side
    426,500.12x = 110,892,468,503.30
  5. Step 5: Solve for x
    x = 110,892,468,503.30/426,500.12
  6. Step 6: Final answer
    x = 260,005.72

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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.