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Finding the Fourth Proportional to 370,765.41, 511,660.29 and 217,810.05

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Solution

The fourth proportional to 370,765.41, 511,660.29 and 217,810.05 is: 300,580.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,765.41 : 511,660.29 = 217,810.05 : x
  2. Step 2: Convert to fraction form
    370,765.41/511,660.29 = 217,810.05/x
  3. Step 3: Cross multiply
    370,765.41x = 511,660.29 × 217,810.05
  4. Step 4: Simplify right side
    370,765.41x = 111,444,753,347.91
  5. Step 5: Solve for x
    x = 111,444,753,347.91/370,765.41
  6. Step 6: Final answer
    x = 300,580.23

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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.