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Finding the Fourth Proportional to 264,002.60, 396,000.30 and 86,515.40

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Solution

The fourth proportional to 264,002.60, 396,000.30 and 86,515.40 is: 129,771.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,002.60 : 396,000.30 = 86,515.40 : x
  2. Step 2: Convert to fraction form
    264,002.60/396,000.30 = 86,515.40/x
  3. Step 3: Cross multiply
    264,002.60x = 396,000.30 × 86,515.40
  4. Step 4: Simplify right side
    264,002.60x = 34,260,124,354.62
  5. Step 5: Solve for x
    x = 34,260,124,354.62/264,002.60
  6. Step 6: Final answer
    x = 129,771.92

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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.