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Finding the Fourth Proportional to 230,836.67, 346,237.72 and 81,078.28

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Solution

The fourth proportional to 230,836.67, 346,237.72 and 81,078.28 is: 121,611.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,836.67 : 346,237.72 = 81,078.28 : x
  2. Step 2: Convert to fraction form
    230,836.67/346,237.72 = 81,078.28/x
  3. Step 3: Cross multiply
    230,836.67x = 346,237.72 × 81,078.28
  4. Step 4: Simplify right side
    230,836.67x = 28,072,358,808.72
  5. Step 5: Solve for x
    x = 28,072,358,808.72/230,836.67
  6. Step 6: Final answer
    x = 121,611.35

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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.