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Finding the Fourth Proportional to 295,247.20, 442,870.80 and 279,695.20

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Solution

The fourth proportional to 295,247.20, 442,870.80 and 279,695.20 is: 419,542.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,247.20 : 442,870.80 = 279,695.20 : x
  2. Step 2: Convert to fraction form
    295,247.20/442,870.80 = 279,695.20/x
  3. Step 3: Cross multiply
    295,247.20x = 442,870.80 × 279,695.20
  4. Step 4: Simplify right side
    295,247.20x = 123,868,836,980.16
  5. Step 5: Solve for x
    x = 123,868,836,980.16/295,247.20
  6. Step 6: Final answer
    x = 419,542.80

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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.