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Finding the Fourth Proportional to 370,785.22, 511,709.82 and 209,641.84

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Solution

The fourth proportional to 370,785.22, 511,709.82 and 209,641.84 is: 289,320.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,785.22 : 511,709.82 = 209,641.84 : x
  2. Step 2: Convert to fraction form
    370,785.22/511,709.82 = 209,641.84/x
  3. Step 3: Cross multiply
    370,785.22x = 511,709.82 × 209,641.84
  4. Step 4: Simplify right side
    370,785.22x = 107,275,788,210.87
  5. Step 5: Solve for x
    x = 107,275,788,210.87/370,785.22
  6. Step 6: Final answer
    x = 289,320.56

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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.