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Finding the Fourth Proportional to 256,824.60, 385,265.70 and 79,330.20

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Solution

The fourth proportional to 256,824.60, 385,265.70 and 79,330.20 is: 119,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,824.60 : 385,265.70 = 79,330.20 : x
  2. Step 2: Convert to fraction form
    256,824.60/385,265.70 = 79,330.20/x
  3. Step 3: Cross multiply
    256,824.60x = 385,265.70 × 79,330.20
  4. Step 4: Simplify right side
    256,824.60x = 30,563,205,034.14
  5. Step 5: Solve for x
    x = 30,563,205,034.14/256,824.60
  6. Step 6: Final answer
    x = 119,004.20

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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.