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Finding the Fourth Proportional to 230,342.31, 317,883.21 and 134,879.76

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Solution

The fourth proportional to 230,342.31, 317,883.21 and 134,879.76 is: 186,140.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,342.31 : 317,883.21 = 134,879.76 : x
  2. Step 2: Convert to fraction form
    230,342.31/317,883.21 = 134,879.76/x
  3. Step 3: Cross multiply
    230,342.31x = 317,883.21 × 134,879.76
  4. Step 4: Simplify right side
    230,342.31x = 42,876,011,072.83
  5. Step 5: Solve for x
    x = 42,876,011,072.83/230,342.31
  6. Step 6: Final answer
    x = 186,140.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.