Home / 426,423.20-639,633.54-173,644.16

Finding the Fourth Proportional to 426,423.20, 639,633.54 and 173,644.16

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Solution

The fourth proportional to 426,423.20, 639,633.54 and 173,644.16 is: 260,465.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,423.20 : 639,633.54 = 173,644.16 : x
  2. Step 2: Convert to fraction form
    426,423.20/639,633.54 = 173,644.16/x
  3. Step 3: Cross multiply
    426,423.20x = 639,633.54 × 173,644.16
  4. Step 4: Simplify right side
    426,423.20x = 111,068,628,761.13
  5. Step 5: Solve for x
    x = 111,068,628,761.13/426,423.20
  6. Step 6: Final answer
    x = 260,465.73

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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.