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Finding the Fourth Proportional to 454,209.78, 626,810.09 and 247,477.20

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Solution

The fourth proportional to 454,209.78, 626,810.09 and 247,477.20 is: 341,518.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,209.78 : 626,810.09 = 247,477.20 : x
  2. Step 2: Convert to fraction form
    454,209.78/626,810.09 = 247,477.20/x
  3. Step 3: Cross multiply
    454,209.78x = 626,810.09 × 247,477.20
  4. Step 4: Simplify right side
    454,209.78x = 155,121,206,004.95
  5. Step 5: Solve for x
    x = 155,121,206,004.95/454,209.78
  6. Step 6: Final answer
    x = 341,518.86

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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.