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Finding the Fourth Proportional to 260,402.70, 390,604.04 and 247,105.74

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Solution

The fourth proportional to 260,402.70, 390,604.04 and 247,105.74 is: 370,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,402.70 : 390,604.04 = 247,105.74 : x
  2. Step 2: Convert to fraction form
    260,402.70/390,604.04 = 247,105.74/x
  3. Step 3: Cross multiply
    260,402.70x = 390,604.04 × 247,105.74
  4. Step 4: Simplify right side
    260,402.70x = 96,520,500,351.19
  5. Step 5: Solve for x
    x = 96,520,500,351.19/260,402.70
  6. Step 6: Final answer
    x = 370,658.60

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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.