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Finding the Fourth Proportional to 647,133.40, 970,239.30 and 247,619.80

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Solution

The fourth proportional to 647,133.40, 970,239.30 and 247,619.80 is: 371,253.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,133.40 : 970,239.30 = 247,619.80 : x
  2. Step 2: Convert to fraction form
    647,133.40/970,239.30 = 247,619.80/x
  3. Step 3: Cross multiply
    647,133.40x = 970,239.30 × 247,619.80
  4. Step 4: Simplify right side
    647,133.40x = 240,250,461,418.14
  5. Step 5: Solve for x
    x = 240,250,461,418.14/647,133.40
  6. Step 6: Final answer
    x = 371,253.38

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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.