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Finding the Fourth Proportional to 533,229.86, 735,865.98 and 318,388.70

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Solution

The fourth proportional to 533,229.86, 735,865.98 and 318,388.70 is: 439,381.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,229.86 : 735,865.98 = 318,388.70 : x
  2. Step 2: Convert to fraction form
    533,229.86/735,865.98 = 318,388.70/x
  3. Step 3: Cross multiply
    533,229.86x = 735,865.98 × 318,388.70
  4. Step 4: Simplify right side
    533,229.86x = 234,291,412,746.43
  5. Step 5: Solve for x
    x = 234,291,412,746.43/533,229.86
  6. Step 6: Final answer
    x = 439,381.64

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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.