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Finding the Fourth Proportional to 535,329.56, 738,686.70 and 305,901.72

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Solution

The fourth proportional to 535,329.56, 738,686.70 and 305,901.72 is: 422,105.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,329.56 : 738,686.70 = 305,901.72 : x
  2. Step 2: Convert to fraction form
    535,329.56/738,686.70 = 305,901.72/x
  3. Step 3: Cross multiply
    535,329.56x = 738,686.70 × 305,901.72
  4. Step 4: Simplify right side
    535,329.56x = 225,965,532,071.12
  5. Step 5: Solve for x
    x = 225,965,532,071.12/535,329.56
  6. Step 6: Final answer
    x = 422,105.47

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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.