Home / 426,567.20-639,358.64-160,157.78

Finding the Fourth Proportional to 426,567.20, 639,358.64 and 160,157.78

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Solution

The fourth proportional to 426,567.20, 639,358.64 and 160,157.78 is: 240,051.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,567.20 : 639,358.64 = 160,157.78 : x
  2. Step 2: Convert to fraction form
    426,567.20/639,358.64 = 160,157.78/x
  3. Step 3: Cross multiply
    426,567.20x = 639,358.64 × 160,157.78
  4. Step 4: Simplify right side
    426,567.20x = 102,398,260,406.22
  5. Step 5: Solve for x
    x = 102,398,260,406.22/426,567.20
  6. Step 6: Final answer
    x = 240,051.88

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1.5x scale

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.