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Finding the Fourth Proportional to 326,135.80, 488,960.70 and 168,477.40

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Solution

The fourth proportional to 326,135.80, 488,960.70 and 168,477.40 is: 252,590.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,135.80 : 488,960.70 = 168,477.40 : x
  2. Step 2: Convert to fraction form
    326,135.80/488,960.70 = 168,477.40/x
  3. Step 3: Cross multiply
    326,135.80x = 488,960.70 × 168,477.40
  4. Step 4: Simplify right side
    326,135.80x = 82,378,827,438.18
  5. Step 5: Solve for x
    x = 82,378,827,438.18/326,135.80
  6. Step 6: Final answer
    x = 252,590.57

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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.