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Finding the Fourth Proportional to 370,720.80, 511,590.87 and 207,375.18

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Solution

The fourth proportional to 370,720.80, 511,590.87 and 207,375.18 is: 286,175.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,720.80 : 511,590.87 = 207,375.18 : x
  2. Step 2: Convert to fraction form
    370,720.80/511,590.87 = 207,375.18/x
  3. Step 3: Cross multiply
    370,720.80x = 511,590.87 × 207,375.18
  4. Step 4: Simplify right side
    370,720.80x = 106,091,248,752.61
  5. Step 5: Solve for x
    x = 106,091,248,752.61/370,720.80
  6. Step 6: Final answer
    x = 286,175.61

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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.