Home / 480,961.08-721,434.30-165,420.72

Finding the Fourth Proportional to 480,961.08, 721,434.30 and 165,420.72

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Solution

The fourth proportional to 480,961.08, 721,434.30 and 165,420.72 is: 248,128.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,961.08 : 721,434.30 = 165,420.72 : x
  2. Step 2: Convert to fraction form
    480,961.08/721,434.30 = 165,420.72/x
  3. Step 3: Cross multiply
    480,961.08x = 721,434.30 × 165,420.72
  4. Step 4: Simplify right side
    480,961.08x = 119,340,181,338.70
  5. Step 5: Solve for x
    x = 119,340,181,338.70/480,961.08
  6. Step 6: Final answer
    x = 248,128.56

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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.