Home / 426,564.20-639,354.14-160,154.78

Finding the Fourth Proportional to 426,564.20, 639,354.14 and 160,154.78

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Solution

The fourth proportional to 426,564.20, 639,354.14 and 160,154.78 is: 240,047.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,564.20 : 639,354.14 = 160,154.78 : x
  2. Step 2: Convert to fraction form
    426,564.20/639,354.14 = 160,154.78/x
  3. Step 3: Cross multiply
    426,564.20x = 639,354.14 × 160,154.78
  4. Step 4: Simplify right side
    426,564.20x = 102,395,621,633.79
  5. Step 5: Solve for x
    x = 102,395,621,633.79/426,564.20
  6. Step 6: Final answer
    x = 240,047.39

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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.