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Finding the Fourth Proportional to 326,081.80, 488,879.70 and 168,423.40

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Solution

The fourth proportional to 326,081.80, 488,879.70 and 168,423.40 is: 252,509.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,081.80 : 488,879.70 = 168,423.40 : x
  2. Step 2: Convert to fraction form
    326,081.80/488,879.70 = 168,423.40/x
  3. Step 3: Cross multiply
    326,081.80x = 488,879.70 × 168,423.40
  4. Step 4: Simplify right side
    326,081.80x = 82,338,781,264.98
  5. Step 5: Solve for x
    x = 82,338,781,264.98/326,081.80
  6. Step 6: Final answer
    x = 252,509.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.