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Finding the Fourth Proportional to 230,903.28, 318,699.65 and 135,440.73

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Solution

The fourth proportional to 230,903.28, 318,699.65 and 135,440.73 is: 186,939.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,903.28 : 318,699.65 = 135,440.73 : x
  2. Step 2: Convert to fraction form
    230,903.28/318,699.65 = 135,440.73/x
  3. Step 3: Cross multiply
    230,903.28x = 318,699.65 × 135,440.73
  4. Step 4: Simplify right side
    230,903.28x = 43,164,913,246.74
  5. Step 5: Solve for x
    x = 43,164,913,246.74/230,903.28
  6. Step 6: Final answer
    x = 186,939.37

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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.