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Finding the Fourth Proportional to 224,390.66, 309,659.09 and 128,897.33

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Solution

The fourth proportional to 224,390.66, 309,659.09 and 128,897.33 is: 177,878.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,390.66 : 309,659.09 = 128,897.33 : x
  2. Step 2: Convert to fraction form
    224,390.66/309,659.09 = 128,897.33/x
  3. Step 3: Cross multiply
    224,390.66x = 309,659.09 × 128,897.33
  4. Step 4: Simplify right side
    224,390.66x = 39,914,227,718.45
  5. Step 5: Solve for x
    x = 39,914,227,718.45/224,390.66
  6. Step 6: Final answer
    x = 177,878.30

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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.