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Finding the Fourth Proportional to 224,424.84, 309,718.12 and 128,937.72

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Solution

The fourth proportional to 224,424.84, 309,718.12 and 128,937.72 is: 177,940.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,424.84 : 309,718.12 = 128,937.72 : x
  2. Step 2: Convert to fraction form
    224,424.84/309,718.12 = 128,937.72/x
  3. Step 3: Cross multiply
    224,424.84x = 309,718.12 × 128,937.72
  4. Step 4: Simplify right side
    224,424.84x = 39,934,348,235.49
  5. Step 5: Solve for x
    x = 39,934,348,235.49/224,424.84
  6. Step 6: Final answer
    x = 177,940.86

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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.