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Finding the Fourth Proportional to 262,402.80, 393,701.40 and 104,744.40

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Solution

The fourth proportional to 262,402.80, 393,701.40 and 104,744.40 is: 157,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,402.80 : 393,701.40 = 104,744.40 : x
  2. Step 2: Convert to fraction form
    262,402.80/393,701.40 = 104,744.40/x
  3. Step 3: Cross multiply
    262,402.80x = 393,701.40 × 104,744.40
  4. Step 4: Simplify right side
    262,402.80x = 41,238,016,922.16
  5. Step 5: Solve for x
    x = 41,238,016,922.16/262,402.80
  6. Step 6: Final answer
    x = 157,155.40

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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.