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Finding the Fourth Proportional to 535,103.21, 738,414.21 and 305,615.38

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Solution

The fourth proportional to 535,103.21, 738,414.21 and 305,615.38 is: 421,733.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,103.21 : 738,414.21 = 305,615.38 : x
  2. Step 2: Convert to fraction form
    535,103.21/738,414.21 = 305,615.38/x
  3. Step 3: Cross multiply
    535,103.21x = 738,414.21 × 305,615.38
  4. Step 4: Simplify right side
    535,103.21x = 225,670,739,386.55
  5. Step 5: Solve for x
    x = 225,670,739,386.55/535,103.21
  6. Step 6: Final answer
    x = 421,733.11

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1.5x scale

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.