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Finding the Fourth Proportional to 370,321.48, 511,042.80 and 200,555.20

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Solution

The fourth proportional to 370,321.48, 511,042.80 and 200,555.20 is: 276,765.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,321.48 : 511,042.80 = 200,555.20 : x
  2. Step 2: Convert to fraction form
    370,321.48/511,042.80 = 200,555.20/x
  3. Step 3: Cross multiply
    370,321.48x = 511,042.80 × 200,555.20
  4. Step 4: Simplify right side
    370,321.48x = 102,492,290,962.56
  5. Step 5: Solve for x
    x = 102,492,290,962.56/370,321.48
  6. Step 6: Final answer
    x = 276,765.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.