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Finding the Fourth Proportional to 647,237.20, 970,564.20 and 247,745.20

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Solution

The fourth proportional to 647,237.20, 970,564.20 and 247,745.20 is: 371,506.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,237.20 : 970,564.20 = 247,745.20 : x
  2. Step 2: Convert to fraction form
    647,237.20/970,564.20 = 247,745.20/x
  3. Step 3: Cross multiply
    647,237.20x = 970,564.20 × 247,745.20
  4. Step 4: Simplify right side
    647,237.20x = 240,452,621,841.84
  5. Step 5: Solve for x
    x = 240,452,621,841.84/647,237.20
  6. Step 6: Final answer
    x = 371,506.18

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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.