Home / 254,921.20-382,389.06-86,442

Finding the Fourth Proportional to 254,921.20, 382,389.06 and 86,442

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Solution

The fourth proportional to 254,921.20, 382,389.06 and 86,442 is: 129,665.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,921.20 : 382,389.06 = 86,442 : x
  2. Step 2: Convert to fraction form
    254,921.20/382,389.06 = 86,442/x
  3. Step 3: Cross multiply
    254,921.20x = 382,389.06 × 86,442
  4. Step 4: Simplify right side
    254,921.20x = 33,054,475,124.52
  5. Step 5: Solve for x
    x = 33,054,475,124.52/254,921.20
  6. Step 6: Final answer
    x = 129,665.46

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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.