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Finding the Fourth Proportional to 256,034.40, 383,744.40 and 131,311.20

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Solution

The fourth proportional to 256,034.40, 383,744.40 and 131,311.20 is: 196,809.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,034.40 : 383,744.40 = 131,311.20 : x
  2. Step 2: Convert to fraction form
    256,034.40/383,744.40 = 131,311.20/x
  3. Step 3: Cross multiply
    256,034.40x = 383,744.40 × 131,311.20
  4. Step 4: Simplify right side
    256,034.40x = 50,389,937,657.28
  5. Step 5: Solve for x
    x = 50,389,937,657.28/256,034.40
  6. Step 6: Final answer
    x = 196,809.25

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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.