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Finding the Fourth Proportional to 242,908.50, 364,421.10 and 76,696.50

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Solution

The fourth proportional to 242,908.50, 364,421.10 and 76,696.50 is: 115,063.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,908.50 : 364,421.10 = 76,696.50 : x
  2. Step 2: Convert to fraction form
    242,908.50/364,421.10 = 76,696.50/x
  3. Step 3: Cross multiply
    242,908.50x = 364,421.10 × 76,696.50
  4. Step 4: Simplify right side
    242,908.50x = 27,949,822,896.15
  5. Step 5: Solve for x
    x = 27,949,822,896.15/242,908.50
  6. Step 6: Final answer
    x = 115,063.17

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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.