Home / 426,555.45-639,341.03-160,146.05

Finding the Fourth Proportional to 426,555.45, 639,341.03 and 160,146.05

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Solution

The fourth proportional to 426,555.45, 639,341.03 and 160,146.05 is: 240,034.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,555.45 : 639,341.03 = 160,146.05 : x
  2. Step 2: Convert to fraction form
    426,555.45/639,341.03 = 160,146.05/x
  3. Step 3: Cross multiply
    426,555.45x = 639,341.03 × 160,146.05
  4. Step 4: Simplify right side
    426,555.45x = 102,387,937,761.09
  5. Step 5: Solve for x
    x = 102,387,937,761.09/426,555.45
  6. Step 6: Final answer
    x = 240,034.30

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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.