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Finding the Fourth Proportional to 245,415.65, 368,112.76 and 76,932.13

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Solution

The fourth proportional to 245,415.65, 368,112.76 and 76,932.13 is: 115,394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,415.65 : 368,112.76 = 76,932.13 : x
  2. Step 2: Convert to fraction form
    245,415.65/368,112.76 = 76,932.13/x
  3. Step 3: Cross multiply
    245,415.65x = 368,112.76 × 76,932.13
  4. Step 4: Simplify right side
    245,415.65x = 28,319,697,357.45
  5. Step 5: Solve for x
    x = 28,319,697,357.45/245,415.65
  6. Step 6: Final answer
    x = 115,394.83

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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.