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Finding the Fourth Proportional to 230,901.22, 318,559.39 and 135,389.40

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Solution

The fourth proportional to 230,901.22, 318,559.39 and 135,389.40 is: 186,787.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,901.22 : 318,559.39 = 135,389.40 : x
  2. Step 2: Convert to fraction form
    230,901.22/318,559.39 = 135,389.40/x
  3. Step 3: Cross multiply
    230,901.22x = 318,559.39 × 135,389.40
  4. Step 4: Simplify right side
    230,901.22x = 43,129,564,676.47
  5. Step 5: Solve for x
    x = 43,129,564,676.47/230,901.22
  6. Step 6: Final answer
    x = 186,787.95

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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.