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Finding the Fourth Proportional to 647,047.40, 970,110.30 and 247,533.80

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Solution

The fourth proportional to 647,047.40, 970,110.30 and 247,533.80 is: 371,124.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,047.40 : 970,110.30 = 247,533.80 : x
  2. Step 2: Convert to fraction form
    647,047.40/970,110.30 = 247,533.80/x
  3. Step 3: Cross multiply
    647,047.40x = 970,110.30 × 247,533.80
  4. Step 4: Simplify right side
    647,047.40x = 240,135,088,978.14
  5. Step 5: Solve for x
    x = 240,135,088,978.14/647,047.40
  6. Step 6: Final answer
    x = 371,124.42

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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.