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Finding the Fourth Proportional to 230,901.55, 318,716.73 and 135,446.83

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Solution

The fourth proportional to 230,901.55, 318,716.73 and 135,446.83 is: 186,959.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,901.55 : 318,716.73 = 135,446.83 : x
  2. Step 2: Convert to fraction form
    230,901.55/318,716.73 = 135,446.83/x
  3. Step 3: Cross multiply
    230,901.55x = 318,716.73 × 135,446.83
  4. Step 4: Simplify right side
    230,901.55x = 43,169,170,746.47
  5. Step 5: Solve for x
    x = 43,169,170,746.47/230,901.55
  6. Step 6: Final answer
    x = 186,959.21

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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.