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Finding the Fourth Proportional to 242,632.80, 363,949.20 and 208,807.20

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Solution

The fourth proportional to 242,632.80, 363,949.20 and 208,807.20 is: 313,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,632.80 : 363,949.20 = 208,807.20 : x
  2. Step 2: Convert to fraction form
    242,632.80/363,949.20 = 208,807.20/x
  3. Step 3: Cross multiply
    242,632.80x = 363,949.20 × 208,807.20
  4. Step 4: Simplify right side
    242,632.80x = 75,995,213,394.24
  5. Step 5: Solve for x
    x = 75,995,213,394.24/242,632.80
  6. Step 6: Final answer
    x = 313,210.80

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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.