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Finding the Fourth Proportional to 256,951.38, 385,205.58 and 99,290.46

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Solution

The fourth proportional to 256,951.38, 385,205.58 and 99,290.46 is: 148,850.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,951.38 : 385,205.58 = 99,290.46 : x
  2. Step 2: Convert to fraction form
    256,951.38/385,205.58 = 99,290.46/x
  3. Step 3: Cross multiply
    256,951.38x = 385,205.58 × 99,290.46
  4. Step 4: Simplify right side
    256,951.38x = 38,247,239,232.77
  5. Step 5: Solve for x
    x = 38,247,239,232.77/256,951.38
  6. Step 6: Final answer
    x = 148,850.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.