Home / 285,942.24-428,916.44-86,264.36

Finding the Fourth Proportional to 285,942.24, 428,916.44 and 86,264.36

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Solution

The fourth proportional to 285,942.24, 428,916.44 and 86,264.36 is: 129,397.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,942.24 : 428,916.44 = 86,264.36 : x
  2. Step 2: Convert to fraction form
    285,942.24/428,916.44 = 86,264.36/x
  3. Step 3: Cross multiply
    285,942.24x = 428,916.44 × 86,264.36
  4. Step 4: Simplify right side
    285,942.24x = 37,000,199,614.17
  5. Step 5: Solve for x
    x = 37,000,199,614.17/285,942.24
  6. Step 6: Final answer
    x = 129,397.46

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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.