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Finding the Fourth Proportional to 230,819.76, 346,271.76 and 81,015.12

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Solution

The fourth proportional to 230,819.76, 346,271.76 and 81,015.12 is: 121,537.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,819.76 : 346,271.76 = 81,015.12 : x
  2. Step 2: Convert to fraction form
    230,819.76/346,271.76 = 81,015.12/x
  3. Step 3: Cross multiply
    230,819.76x = 346,271.76 × 81,015.12
  4. Step 4: Simplify right side
    230,819.76x = 28,053,248,189.01
  5. Step 5: Solve for x
    x = 28,053,248,189.01/230,819.76
  6. Step 6: Final answer
    x = 121,537.46

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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.