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Finding the Fourth Proportional to 352,375.47, 486,278.82 and 209,164.23

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Solution

The fourth proportional to 352,375.47, 486,278.82 and 209,164.23 is: 288,647.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,375.47 : 486,278.82 = 209,164.23 : x
  2. Step 2: Convert to fraction form
    352,375.47/486,278.82 = 209,164.23/x
  3. Step 3: Cross multiply
    352,375.47x = 486,278.82 × 209,164.23
  4. Step 4: Simplify right side
    352,375.47x = 101,712,134,950.61
  5. Step 5: Solve for x
    x = 101,712,134,950.61/352,375.47
  6. Step 6: Final answer
    x = 288,647.04

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1.5x scale

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.