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Finding the Fourth Proportional to 279,188.88, 385,349.08 and 158,400.88

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Solution

The fourth proportional to 279,188.88, 385,349.08 and 158,400.88 is: 218,632.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,188.88 : 385,349.08 = 158,400.88 : x
  2. Step 2: Convert to fraction form
    279,188.88/385,349.08 = 158,400.88/x
  3. Step 3: Cross multiply
    279,188.88x = 385,349.08 × 158,400.88
  4. Step 4: Simplify right side
    279,188.88x = 61,039,633,379.19
  5. Step 5: Solve for x
    x = 61,039,633,379.19/279,188.88
  6. Step 6: Final answer
    x = 218,632.04

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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.