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Finding the Fourth Proportional to 312,000.60, 468,000.90 and 275,842.20

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Solution

The fourth proportional to 312,000.60, 468,000.90 and 275,842.20 is: 413,763.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,000.60 : 468,000.90 = 275,842.20 : x
  2. Step 2: Convert to fraction form
    312,000.60/468,000.90 = 275,842.20/x
  3. Step 3: Cross multiply
    312,000.60x = 468,000.90 × 275,842.20
  4. Step 4: Simplify right side
    312,000.60x = 129,094,397,857.98
  5. Step 5: Solve for x
    x = 129,094,397,857.98/312,000.60
  6. Step 6: Final answer
    x = 413,763.30

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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.