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Finding the Fourth Proportional to 224,392.66, 309,661.84 and 128,899.32

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Solution

The fourth proportional to 224,392.66, 309,661.84 and 128,899.32 is: 177,881.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,392.66 : 309,661.84 = 128,899.32 : x
  2. Step 2: Convert to fraction form
    224,392.66/309,661.84 = 128,899.32/x
  3. Step 3: Cross multiply
    224,392.66x = 309,661.84 × 128,899.32
  4. Step 4: Simplify right side
    224,392.66x = 39,915,200,605.95
  5. Step 5: Solve for x
    x = 39,915,200,605.95/224,392.66
  6. Step 6: Final answer
    x = 177,881.04

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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.