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Finding the Fourth Proportional to 535,038.92, 738,359.75 and 305,626.57

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Solution

The fourth proportional to 535,038.92, 738,359.75 and 305,626.57 is: 421,768.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,038.92 : 738,359.75 = 305,626.57 : x
  2. Step 2: Convert to fraction form
    535,038.92/738,359.75 = 305,626.57/x
  3. Step 3: Cross multiply
    535,038.92x = 738,359.75 × 305,626.57
  4. Step 4: Simplify right side
    535,038.92x = 225,662,356,736.73
  5. Step 5: Solve for x
    x = 225,662,356,736.73/535,038.92
  6. Step 6: Final answer
    x = 421,768.12

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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.