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Finding the Fourth Proportional to 256,870.20, 385,305.30 and 230,626.20

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Solution

The fourth proportional to 256,870.20, 385,305.30 and 230,626.20 is: 345,939.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,870.20 : 385,305.30 = 230,626.20 : x
  2. Step 2: Convert to fraction form
    256,870.20/385,305.30 = 230,626.20/x
  3. Step 3: Cross multiply
    256,870.20x = 385,305.30 × 230,626.20
  4. Step 4: Simplify right side
    256,870.20x = 88,861,497,178.86
  5. Step 5: Solve for x
    x = 88,861,497,178.86/256,870.20
  6. Step 6: Final answer
    x = 345,939.30

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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.