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Finding the Fourth Proportional to 245,310.70, 368,007.02 and 76,797.50

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Solution

The fourth proportional to 245,310.70, 368,007.02 and 76,797.50 is: 115,209.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,310.70 : 368,007.02 = 76,797.50 : x
  2. Step 2: Convert to fraction form
    245,310.70/368,007.02 = 76,797.50/x
  3. Step 3: Cross multiply
    245,310.70x = 368,007.02 × 76,797.50
  4. Step 4: Simplify right side
    245,310.70x = 28,262,019,118.45
  5. Step 5: Solve for x
    x = 28,262,019,118.45/245,310.70
  6. Step 6: Final answer
    x = 115,209.08

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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.