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Finding the Fourth Proportional to 223,951.84, 309,093.84 and 128,490.16

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Solution

The fourth proportional to 223,951.84, 309,093.84 and 128,490.16 is: 177,339.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,951.84 : 309,093.84 = 128,490.16 : x
  2. Step 2: Convert to fraction form
    223,951.84/309,093.84 = 128,490.16/x
  3. Step 3: Cross multiply
    223,951.84x = 309,093.84 × 128,490.16
  4. Step 4: Simplify right side
    223,951.84x = 39,715,516,956.61
  5. Step 5: Solve for x
    x = 39,715,516,956.61/223,951.84
  6. Step 6: Final answer
    x = 177,339.54

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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.