Home / 426,570.20-639,363.14-160,160.78

Finding the Fourth Proportional to 426,570.20, 639,363.14 and 160,160.78

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Solution

The fourth proportional to 426,570.20, 639,363.14 and 160,160.78 is: 240,056.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,570.20 : 639,363.14 = 160,160.78 : x
  2. Step 2: Convert to fraction form
    426,570.20/639,363.14 = 160,160.78/x
  3. Step 3: Cross multiply
    426,570.20x = 639,363.14 × 160,160.78
  4. Step 4: Simplify right side
    426,570.20x = 102,400,899,205.65
  5. Step 5: Solve for x
    x = 102,400,899,205.65/426,570.20
  6. Step 6: Final answer
    x = 240,056.38

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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.