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Finding the Fourth Proportional to 643,615.20, 965,131.20 and 244,123.20

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Solution

The fourth proportional to 643,615.20, 965,131.20 and 244,123.20 is: 366,074.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,615.20 : 965,131.20 = 244,123.20 : x
  2. Step 2: Convert to fraction form
    643,615.20/965,131.20 = 244,123.20/x
  3. Step 3: Cross multiply
    643,615.20x = 965,131.20 × 244,123.20
  4. Step 4: Simplify right side
    643,615.20x = 235,610,916,963.84
  5. Step 5: Solve for x
    x = 235,610,916,963.84/643,615.20
  6. Step 6: Final answer
    x = 366,074.20

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1.5x scale

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.