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Finding the Fourth Proportional to 358,956.83, 495,363.74 and 197,817.66

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Solution

The fourth proportional to 358,956.83, 495,363.74 and 197,817.66 is: 272,990.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,956.83 : 495,363.74 = 197,817.66 : x
  2. Step 2: Convert to fraction form
    358,956.83/495,363.74 = 197,817.66/x
  3. Step 3: Cross multiply
    358,956.83x = 495,363.74 × 197,817.66
  4. Step 4: Simplify right side
    358,956.83x = 97,991,694,906.56
  5. Step 5: Solve for x
    x = 97,991,694,906.56/358,956.83
  6. Step 6: Final answer
    x = 272,990.19

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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.