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Finding the Fourth Proportional to 326,139.62, 449,881.53 and 205,088.90

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Solution

The fourth proportional to 326,139.62, 449,881.53 and 205,088.90 is: 282,902.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,139.62 : 449,881.53 = 205,088.90 : x
  2. Step 2: Convert to fraction form
    326,139.62/449,881.53 = 205,088.90/x
  3. Step 3: Cross multiply
    326,139.62x = 449,881.53 × 205,088.90
  4. Step 4: Simplify right side
    326,139.62x = 92,265,708,118.02
  5. Step 5: Solve for x
    x = 92,265,708,118.02/326,139.62
  6. Step 6: Final answer
    x = 282,902.48

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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.