Home / 480,520.40-721,139.64-181,296.08

Finding the Fourth Proportional to 480,520.40, 721,139.64 and 181,296.08

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Solution

The fourth proportional to 480,520.40, 721,139.64 and 181,296.08 is: 272,079.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,520.40 : 721,139.64 = 181,296.08 : x
  2. Step 2: Convert to fraction form
    480,520.40/721,139.64 = 181,296.08/x
  3. Step 3: Cross multiply
    480,520.40x = 721,139.64 × 181,296.08
  4. Step 4: Simplify right side
    480,520.40x = 130,739,789,864.61
  5. Step 5: Solve for x
    x = 130,739,789,864.61/480,520.40
  6. Step 6: Final answer
    x = 272,079.58

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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.