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Finding the Fourth Proportional to 533,255.40, 735,901.20 and 318,414.24

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Solution

The fourth proportional to 533,255.40, 735,901.20 and 318,414.24 is: 439,416.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,255.40 : 735,901.20 = 318,414.24 : x
  2. Step 2: Convert to fraction form
    533,255.40/735,901.20 = 318,414.24/x
  3. Step 3: Cross multiply
    533,255.40x = 735,901.20 × 318,414.24
  4. Step 4: Simplify right side
    533,255.40x = 234,321,421,313.09
  5. Step 5: Solve for x
    x = 234,321,421,313.09/533,255.40
  6. Step 6: Final answer
    x = 439,416.87

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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.