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Finding the Fourth Proportional to 308,657.83, 425,803.95 and 199,797.28

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Solution

The fourth proportional to 308,657.83, 425,803.95 and 199,797.28 is: 275,627.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,657.83 : 425,803.95 = 199,797.28 : x
  2. Step 2: Convert to fraction form
    308,657.83/425,803.95 = 199,797.28/x
  3. Step 3: Cross multiply
    308,657.83x = 425,803.95 × 199,797.28
  4. Step 4: Simplify right side
    308,657.83x = 85,074,471,023.26
  5. Step 5: Solve for x
    x = 85,074,471,023.26/308,657.83
  6. Step 6: Final answer
    x = 275,627.13

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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.