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Finding the Fourth Proportional to 224,728.73, 310,099.69 and 129,266.18

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Solution

The fourth proportional to 224,728.73, 310,099.69 and 129,266.18 is: 178,372.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,728.73 : 310,099.69 = 129,266.18 : x
  2. Step 2: Convert to fraction form
    224,728.73/310,099.69 = 129,266.18/x
  3. Step 3: Cross multiply
    224,728.73x = 310,099.69 × 129,266.18
  4. Step 4: Simplify right side
    224,728.73x = 40,085,402,345.48
  5. Step 5: Solve for x
    x = 40,085,402,345.48/224,728.73
  6. Step 6: Final answer
    x = 178,372.40

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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.