Home / 426,236.20-639,123.90-176,943.40

Finding the Fourth Proportional to 426,236.20, 639,123.90 and 176,943.40

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Solution

The fourth proportional to 426,236.20, 639,123.90 and 176,943.40 is: 265,319.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,236.20 : 639,123.90 = 176,943.40 : x
  2. Step 2: Convert to fraction form
    426,236.20/639,123.90 = 176,943.40/x
  3. Step 3: Cross multiply
    426,236.20x = 639,123.90 × 176,943.40
  4. Step 4: Simplify right side
    426,236.20x = 113,088,755,887.26
  5. Step 5: Solve for x
    x = 113,088,755,887.26/426,236.20
  6. Step 6: Final answer
    x = 265,319.45

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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.