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Finding the Fourth Proportional to 533,211.15, 800,018.73 and 320,127.86

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Solution

The fourth proportional to 533,211.15, 800,018.73 and 320,127.86 is: 480,313.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,211.15 : 800,018.73 = 320,127.86 : x
  2. Step 2: Convert to fraction form
    533,211.15/800,018.73 = 320,127.86/x
  3. Step 3: Cross multiply
    533,211.15x = 800,018.73 × 320,127.86
  4. Step 4: Simplify right side
    533,211.15x = 256,108,279,994.72
  5. Step 5: Solve for x
    x = 256,108,279,994.72/533,211.15
  6. Step 6: Final answer
    x = 480,313.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.