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Finding the Fourth Proportional to 478,352.85, 660,155.30 and 274,402.27

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Solution

The fourth proportional to 478,352.85, 660,155.30 and 274,402.27 is: 378,691.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,352.85 : 660,155.30 = 274,402.27 : x
  2. Step 2: Convert to fraction form
    478,352.85/660,155.30 = 274,402.27/x
  3. Step 3: Cross multiply
    478,352.85x = 660,155.30 × 274,402.27
  4. Step 4: Simplify right side
    478,352.85x = 181,148,112,872.53
  5. Step 5: Solve for x
    x = 181,148,112,872.53/478,352.85
  6. Step 6: Final answer
    x = 378,691.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.