Home / 331,340.10-497,010.15-305,679.30

Finding the Fourth Proportional to 331,340.10, 497,010.15 and 305,679.30

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Solution

The fourth proportional to 331,340.10, 497,010.15 and 305,679.30 is: 458,518.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,340.10 : 497,010.15 = 305,679.30 : x
  2. Step 2: Convert to fraction form
    331,340.10/497,010.15 = 305,679.30/x
  3. Step 3: Cross multiply
    331,340.10x = 497,010.15 × 305,679.30
  4. Step 4: Simplify right side
    331,340.10x = 151,925,714,744.90
  5. Step 5: Solve for x
    x = 151,925,714,744.90/331,340.10
  6. Step 6: Final answer
    x = 458,518.95

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Double scale
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Similar ratio
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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.