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Finding the Fourth Proportional to 220,774.65, 304,716.50 and 134,715.20

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Solution

The fourth proportional to 220,774.65, 304,716.50 and 134,715.20 is: 185,935.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,774.65 : 304,716.50 = 134,715.20 : x
  2. Step 2: Convert to fraction form
    220,774.65/304,716.50 = 134,715.20/x
  3. Step 3: Cross multiply
    220,774.65x = 304,716.50 × 134,715.20
  4. Step 4: Simplify right side
    220,774.65x = 41,049,942,043.64
  5. Step 5: Solve for x
    x = 41,049,942,043.64/220,774.65
  6. Step 6: Final answer
    x = 185,935.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.