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Finding the Fourth Proportional to 279,400.40, 385,625.72 and 158,552.92

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Solution

The fourth proportional to 279,400.40, 385,625.72 and 158,552.92 is: 218,833.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,400.40 : 385,625.72 = 158,552.92 : x
  2. Step 2: Convert to fraction form
    279,400.40/385,625.72 = 158,552.92/x
  3. Step 3: Cross multiply
    279,400.40x = 385,625.72 × 158,552.92
  4. Step 4: Simplify right side
    279,400.40x = 61,142,083,933.10
  5. Step 5: Solve for x
    x = 61,142,083,933.10/279,400.40
  6. Step 6: Final answer
    x = 218,833.20

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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.