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Finding the Fourth Proportional to 279,084.42, 385,124.76 and 158,233.84

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Solution

The fourth proportional to 279,084.42, 385,124.76 and 158,233.84 is: 218,356.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,084.42 : 385,124.76 = 158,233.84 : x
  2. Step 2: Convert to fraction form
    279,084.42/385,124.76 = 158,233.84/x
  3. Step 3: Cross multiply
    279,084.42x = 385,124.76 × 158,233.84
  4. Step 4: Simplify right side
    279,084.42x = 60,939,768,691.07
  5. Step 5: Solve for x
    x = 60,939,768,691.07/279,084.42
  6. Step 6: Final answer
    x = 218,356.04

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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.