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Finding the Fourth Proportional to 254,041.01, 381,079.97 and 85,561.36

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Solution

The fourth proportional to 254,041.01, 381,079.97 and 85,561.36 is: 128,348.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,041.01 : 381,079.97 = 85,561.36 : x
  2. Step 2: Convert to fraction form
    254,041.01/381,079.97 = 85,561.36/x
  3. Step 3: Cross multiply
    254,041.01x = 381,079.97 × 85,561.36
  4. Step 4: Simplify right side
    254,041.01x = 32,605,721,345.24
  5. Step 5: Solve for x
    x = 32,605,721,345.24/254,041.01
  6. Step 6: Final answer
    x = 128,348.26

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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.