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Finding the Fourth Proportional to 260,411.01, 390,487.29 and 82,894.95

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Solution

The fourth proportional to 260,411.01, 390,487.29 and 82,894.95 is: 124,301.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,411.01 : 390,487.29 = 82,894.95 : x
  2. Step 2: Convert to fraction form
    260,411.01/390,487.29 = 82,894.95/x
  3. Step 3: Cross multiply
    260,411.01x = 390,487.29 × 82,894.95
  4. Step 4: Simplify right side
    260,411.01x = 32,369,424,380.19
  5. Step 5: Solve for x
    x = 32,369,424,380.19/260,411.01
  6. Step 6: Final answer
    x = 124,301.29

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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.