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Finding the Fourth Proportional to 245,341.46, 368,011.73 and 76,874.68

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Solution

The fourth proportional to 245,341.46, 368,011.73 and 76,874.68 is: 115,311.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,341.46 : 368,011.73 = 76,874.68 : x
  2. Step 2: Convert to fraction form
    245,341.46/368,011.73 = 76,874.68/x
  3. Step 3: Cross multiply
    245,341.46x = 368,011.73 × 76,874.68
  4. Step 4: Simplify right side
    245,341.46x = 28,290,784,933.50
  5. Step 5: Solve for x
    x = 28,290,784,933.50/245,341.46
  6. Step 6: Final answer
    x = 115,311.88

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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.