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Finding the Fourth Proportional to 279,213.57, 385,314.43 and 151,888.86

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Solution

The fourth proportional to 279,213.57, 385,314.43 and 151,888.86 is: 209,606.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,213.57 : 385,314.43 = 151,888.86 : x
  2. Step 2: Convert to fraction form
    279,213.57/385,314.43 = 151,888.86/x
  3. Step 3: Cross multiply
    279,213.57x = 385,314.43 × 151,888.86
  4. Step 4: Simplify right side
    279,213.57x = 58,524,969,514.25
  5. Step 5: Solve for x
    x = 58,524,969,514.25/279,213.57
  6. Step 6: Final answer
    x = 209,606.47

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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.