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Finding the Fourth Proportional to 288,881.79, 398,655.50 and 161,557.89

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Solution

The fourth proportional to 288,881.79, 398,655.50 and 161,557.89 is: 222,949.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,881.79 : 398,655.50 = 161,557.89 : x
  2. Step 2: Convert to fraction form
    288,881.79/398,655.50 = 161,557.89/x
  3. Step 3: Cross multiply
    288,881.79x = 398,655.50 × 161,557.89
  4. Step 4: Simplify right side
    288,881.79x = 64,405,941,416.90
  5. Step 5: Solve for x
    x = 64,405,941,416.90/288,881.79
  6. Step 6: Final answer
    x = 222,949.12

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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.