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Finding the Fourth Proportional to 409,423.20, 614,768.40 and 222,799.20

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Solution

The fourth proportional to 409,423.20, 614,768.40 and 222,799.20 is: 334,543.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,423.20 : 614,768.40 = 222,799.20 : x
  2. Step 2: Convert to fraction form
    409,423.20/614,768.40 = 222,799.20/x
  3. Step 3: Cross multiply
    409,423.20x = 614,768.40 × 222,799.20
  4. Step 4: Simplify right side
    409,423.20x = 136,969,907,705.28
  5. Step 5: Solve for x
    x = 136,969,907,705.28/409,423.20
  6. Step 6: Final answer
    x = 334,543.59

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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.