Home / 426,126.96-639,434.65-173,360.79

Finding the Fourth Proportional to 426,126.96, 639,434.65 and 173,360.79

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Solution

The fourth proportional to 426,126.96, 639,434.65 and 173,360.79 is: 260,140.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,126.96 : 639,434.65 = 173,360.79 : x
  2. Step 2: Convert to fraction form
    426,126.96/639,434.65 = 173,360.79/x
  3. Step 3: Cross multiply
    426,126.96x = 639,434.65 × 173,360.79
  4. Step 4: Simplify right side
    426,126.96x = 110,852,892,880.20
  5. Step 5: Solve for x
    x = 110,852,892,880.20/426,126.96
  6. Step 6: Final answer
    x = 260,140.53

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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.