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Finding the Fourth Proportional to 207,281.20, 310,998.60 and 199,601.20

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Solution

The fourth proportional to 207,281.20, 310,998.60 and 199,601.20 is: 299,475.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,281.20 : 310,998.60 = 199,601.20 : x
  2. Step 2: Convert to fraction form
    207,281.20/310,998.60 = 199,601.20/x
  3. Step 3: Cross multiply
    207,281.20x = 310,998.60 × 199,601.20
  4. Step 4: Simplify right side
    207,281.20x = 62,075,693,758.32
  5. Step 5: Solve for x
    x = 62,075,693,758.32/207,281.20
  6. Step 6: Final answer
    x = 299,475.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.