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Finding the Fourth Proportional to 264,000.60, 396,000.90 and 261,667.80

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Solution

The fourth proportional to 264,000.60, 396,000.90 and 261,667.80 is: 392,501.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,000.60 : 396,000.90 = 261,667.80 : x
  2. Step 2: Convert to fraction form
    264,000.60/396,000.90 = 261,667.80/x
  3. Step 3: Cross multiply
    264,000.60x = 396,000.90 × 261,667.80
  4. Step 4: Simplify right side
    264,000.60x = 103,620,684,301.02
  5. Step 5: Solve for x
    x = 103,620,684,301.02/264,000.60
  6. Step 6: Final answer
    x = 392,501.70

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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.