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Finding the Fourth Proportional to 363,939.68, 502,274.13 and 218,792.45

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Solution

The fourth proportional to 363,939.68, 502,274.13 and 218,792.45 is: 301,956.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,939.68 : 502,274.13 = 218,792.45 : x
  2. Step 2: Convert to fraction form
    363,939.68/502,274.13 = 218,792.45/x
  3. Step 3: Cross multiply
    363,939.68x = 502,274.13 × 218,792.45
  4. Step 4: Simplify right side
    363,939.68x = 109,893,787,474.32
  5. Step 5: Solve for x
    x = 109,893,787,474.32/363,939.68
  6. Step 6: Final answer
    x = 301,956.05

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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.