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Finding the Fourth Proportional to 306,847.92, 423,446.72 and 170,878.89

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Solution

The fourth proportional to 306,847.92, 423,446.72 and 170,878.89 is: 235,810.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,847.92 : 423,446.72 = 170,878.89 : x
  2. Step 2: Convert to fraction form
    306,847.92/423,446.72 = 170,878.89/x
  3. Step 3: Cross multiply
    306,847.92x = 423,446.72 × 170,878.89
  4. Step 4: Simplify right side
    306,847.92x = 72,358,104,633.35
  5. Step 5: Solve for x
    x = 72,358,104,633.35/306,847.92
  6. Step 6: Final answer
    x = 235,810.97

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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.