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Finding the Fourth Proportional to 326,207.70, 488,728.35 and 266,721.30

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Solution

The fourth proportional to 326,207.70, 488,728.35 and 266,721.30 is: 399,605.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,207.70 : 488,728.35 = 266,721.30 : x
  2. Step 2: Convert to fraction form
    326,207.70/488,728.35 = 266,721.30/x
  3. Step 3: Cross multiply
    326,207.70x = 488,728.35 × 266,721.30
  4. Step 4: Simplify right side
    326,207.70x = 130,354,260,858.86
  5. Step 5: Solve for x
    x = 130,354,260,858.86/326,207.70
  6. Step 6: Final answer
    x = 399,605.10

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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.