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Finding the Fourth Proportional to 370,407.85, 511,152.36 and 217,443.60

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Solution

The fourth proportional to 370,407.85, 511,152.36 and 217,443.60 is: 300,066.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,407.85 : 511,152.36 = 217,443.60 : x
  2. Step 2: Convert to fraction form
    370,407.85/511,152.36 = 217,443.60/x
  3. Step 3: Cross multiply
    370,407.85x = 511,152.36 × 217,443.60
  4. Step 4: Simplify right side
    370,407.85x = 111,146,809,306.90
  5. Step 5: Solve for x
    x = 111,146,809,306.90/370,407.85
  6. Step 6: Final answer
    x = 300,066.02

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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.