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Finding the Fourth Proportional to 224,392.30, 309,690.16 and 128,917.45

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Solution

The fourth proportional to 224,392.30, 309,690.16 and 128,917.45 is: 177,922.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,392.30 : 309,690.16 = 128,917.45 : x
  2. Step 2: Convert to fraction form
    224,392.30/309,690.16 = 128,917.45/x
  3. Step 3: Cross multiply
    224,392.30x = 309,690.16 × 128,917.45
  4. Step 4: Simplify right side
    224,392.30x = 39,924,465,717.29
  5. Step 5: Solve for x
    x = 39,924,465,717.29/224,392.30
  6. Step 6: Final answer
    x = 177,922.62

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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.