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Finding the Fourth Proportional to 370,632.48, 511,473.60 and 219,739.20

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Solution

The fourth proportional to 370,632.48, 511,473.60 and 219,739.20 is: 303,240.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,632.48 : 511,473.60 = 219,739.20 : x
  2. Step 2: Convert to fraction form
    370,632.48/511,473.60 = 219,739.20/x
  3. Step 3: Cross multiply
    370,632.48x = 511,473.60 × 219,739.20
  4. Step 4: Simplify right side
    370,632.48x = 112,390,799,685.12
  5. Step 5: Solve for x
    x = 112,390,799,685.12/370,632.48
  6. Step 6: Final answer
    x = 303,240.56

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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.