Home / 338,721.19-508,082.02-86,020.63

Finding the Fourth Proportional to 338,721.19, 508,082.02 and 86,020.63

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Solution

The fourth proportional to 338,721.19, 508,082.02 and 86,020.63 is: 129,031.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,721.19 : 508,082.02 = 86,020.63 : x
  2. Step 2: Convert to fraction form
    338,721.19/508,082.02 = 86,020.63/x
  3. Step 3: Cross multiply
    338,721.19x = 508,082.02 × 86,020.63
  4. Step 4: Simplify right side
    338,721.19x = 43,705,536,824.78
  5. Step 5: Solve for x
    x = 43,705,536,824.78/338,721.19
  6. Step 6: Final answer
    x = 129,031.01

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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.