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Finding the Fourth Proportional to 469,451.32, 647,825.33 and 278,350.36

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Solution

The fourth proportional to 469,451.32, 647,825.33 and 278,350.36 is: 384,113.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,451.32 : 647,825.33 = 278,350.36 : x
  2. Step 2: Convert to fraction form
    469,451.32/647,825.33 = 278,350.36/x
  3. Step 3: Cross multiply
    469,451.32x = 647,825.33 × 278,350.36
  4. Step 4: Simplify right side
    469,451.32x = 180,322,413,822.62
  5. Step 5: Solve for x
    x = 180,322,413,822.62/469,451.32
  6. Step 6: Final answer
    x = 384,113.13

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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.