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Finding the Fourth Proportional to 385,419.89, 531,750.26 and 224,240.42

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Solution

The fourth proportional to 385,419.89, 531,750.26 and 224,240.42 is: 309,376.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,419.89 : 531,750.26 = 224,240.42 : x
  2. Step 2: Convert to fraction form
    385,419.89/531,750.26 = 224,240.42/x
  3. Step 3: Cross multiply
    385,419.89x = 531,750.26 × 224,240.42
  4. Step 4: Simplify right side
    385,419.89x = 119,239,897,857.56
  5. Step 5: Solve for x
    x = 119,239,897,857.56/385,419.89
  6. Step 6: Final answer
    x = 309,376.61

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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.