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Finding the Fourth Proportional to 224,615.11, 309,969.50 and 122,641.45

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Solution

The fourth proportional to 224,615.11, 309,969.50 and 122,641.45 is: 169,245.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,615.11 : 309,969.50 = 122,641.45 : x
  2. Step 2: Convert to fraction form
    224,615.11/309,969.50 = 122,641.45/x
  3. Step 3: Cross multiply
    224,615.11x = 309,969.50 × 122,641.45
  4. Step 4: Simplify right side
    224,615.11x = 38,015,108,935.78
  5. Step 5: Solve for x
    x = 38,015,108,935.78/224,615.11
  6. Step 6: Final answer
    x = 169,245.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.