Home / 480,767.20-721,215.60-165,320.80

Finding the Fourth Proportional to 480,767.20, 721,215.60 and 165,320.80

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Solution

The fourth proportional to 480,767.20, 721,215.60 and 165,320.80 is: 248,003.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,767.20 : 721,215.60 = 165,320.80 : x
  2. Step 2: Convert to fraction form
    480,767.20/721,215.60 = 165,320.80/x
  3. Step 3: Cross multiply
    480,767.20x = 721,215.60 × 165,320.80
  4. Step 4: Simplify right side
    480,767.20x = 119,231,939,964.48
  5. Step 5: Solve for x
    x = 119,231,939,964.48/480,767.20
  6. Step 6: Final answer
    x = 248,003.48

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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.