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Finding the Fourth Proportional to 311,535.72, 429,919.02 and 168,295.68

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Solution

The fourth proportional to 311,535.72, 429,919.02 and 168,295.68 is: 232,247.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,535.72 : 429,919.02 = 168,295.68 : x
  2. Step 2: Convert to fraction form
    311,535.72/429,919.02 = 168,295.68/x
  3. Step 3: Cross multiply
    311,535.72x = 429,919.02 × 168,295.68
  4. Step 4: Simplify right side
    311,535.72x = 72,353,513,815.83
  5. Step 5: Solve for x
    x = 72,353,513,815.83/311,535.72
  6. Step 6: Final answer
    x = 232,247.89

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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.