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Finding the Fourth Proportional to 370,437.60, 511,287.48 and 209,385.84

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Solution

The fourth proportional to 370,437.60, 511,287.48 and 209,385.84 is: 288,999.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,437.60 : 511,287.48 = 209,385.84 : x
  2. Step 2: Convert to fraction form
    370,437.60/511,287.48 = 209,385.84/x
  3. Step 3: Cross multiply
    370,437.60x = 511,287.48 × 209,385.84
  4. Step 4: Simplify right side
    370,437.60x = 107,056,358,481.28
  5. Step 5: Solve for x
    x = 107,056,358,481.28/370,437.60
  6. Step 6: Final answer
    x = 288,999.71

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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.