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Finding the Fourth Proportional to 385,354.52, 578,020.94 and 104,874.20

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Solution

The fourth proportional to 385,354.52, 578,020.94 and 104,874.20 is: 157,308.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,354.52 : 578,020.94 = 104,874.20 : x
  2. Step 2: Convert to fraction form
    385,354.52/578,020.94 = 104,874.20/x
  3. Step 3: Cross multiply
    385,354.52x = 578,020.94 × 104,874.20
  4. Step 4: Simplify right side
    385,354.52x = 60,619,483,665.75
  5. Step 5: Solve for x
    x = 60,619,483,665.75/385,354.52
  6. Step 6: Final answer
    x = 157,308.35

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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.