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Finding the Fourth Proportional to 386,280.89, 579,678.41 and 158,763.09

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Solution

The fourth proportional to 386,280.89, 579,678.41 and 158,763.09 is: 238,250.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,280.89 : 579,678.41 = 158,763.09 : x
  2. Step 2: Convert to fraction form
    386,280.89/579,678.41 = 158,763.09/x
  3. Step 3: Cross multiply
    386,280.89x = 579,678.41 × 158,763.09
  4. Step 4: Simplify right side
    386,280.89x = 92,031,535,577.89
  5. Step 5: Solve for x
    x = 92,031,535,577.89/386,280.89
  6. Step 6: Final answer
    x = 238,250.29

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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.