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Finding the Fourth Proportional to 312,719.67, 469,079.51 and 76,062.51

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Solution

The fourth proportional to 312,719.67, 469,079.51 and 76,062.51 is: 114,093.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,719.67 : 469,079.51 = 76,062.51 : x
  2. Step 2: Convert to fraction form
    312,719.67/469,079.51 = 76,062.51/x
  3. Step 3: Cross multiply
    312,719.67x = 469,079.51 × 76,062.51
  4. Step 4: Simplify right side
    312,719.67x = 35,679,364,539.86
  5. Step 5: Solve for x
    x = 35,679,364,539.86/312,719.67
  6. Step 6: Final answer
    x = 114,093.77

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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.