Home / 426,126.83-639,434.46-173,360.66

Finding the Fourth Proportional to 426,126.83, 639,434.46 and 173,360.66

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Solution

The fourth proportional to 426,126.83, 639,434.46 and 173,360.66 is: 260,140.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,126.83 : 639,434.46 = 173,360.66 : x
  2. Step 2: Convert to fraction form
    426,126.83/639,434.46 = 173,360.66/x
  3. Step 3: Cross multiply
    426,126.83x = 639,434.46 × 173,360.66
  4. Step 4: Simplify right side
    426,126.83x = 110,852,780,012.34
  5. Step 5: Solve for x
    x = 110,852,780,012.34/426,126.83
  6. Step 6: Final answer
    x = 260,140.34

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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.