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Finding the Fourth Proportional to 224,805.75, 310,240.85 and 129,312.33

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Solution

The fourth proportional to 224,805.75, 310,240.85 and 129,312.33 is: 178,456.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,805.75 : 310,240.85 = 129,312.33 : x
  2. Step 2: Convert to fraction form
    224,805.75/310,240.85 = 129,312.33/x
  3. Step 3: Cross multiply
    224,805.75x = 310,240.85 × 129,312.33
  4. Step 4: Simplify right side
    224,805.75x = 40,117,966,528.12
  5. Step 5: Solve for x
    x = 40,117,966,528.12/224,805.75
  6. Step 6: Final answer
    x = 178,456.14

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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.