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Finding the Fourth Proportional to 370,801.60, 511,716.28 and 209,680.75

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Solution

The fourth proportional to 370,801.60, 511,716.28 and 209,680.75 is: 289,365.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,801.60 : 511,716.28 = 209,680.75 : x
  2. Step 2: Convert to fraction form
    370,801.60/511,716.28 = 209,680.75/x
  3. Step 3: Cross multiply
    370,801.60x = 511,716.28 × 209,680.75
  4. Step 4: Simplify right side
    370,801.60x = 107,297,053,377.61
  5. Step 5: Solve for x
    x = 107,297,053,377.61/370,801.60
  6. Step 6: Final answer
    x = 289,365.13

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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.