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Finding the Fourth Proportional to 381,114, 525,899.52 and 220,021.02

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Solution

The fourth proportional to 381,114, 525,899.52 and 220,021.02 is: 303,607.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,114 : 525,899.52 = 220,021.02 : x
  2. Step 2: Convert to fraction form
    381,114/525,899.52 = 220,021.02/x
  3. Step 3: Cross multiply
    381,114x = 525,899.52 × 220,021.02
  4. Step 4: Simplify right side
    381,114x = 115,708,948,807.91
  5. Step 5: Solve for x
    x = 115,708,948,807.91/381,114
  6. Step 6: Final answer
    x = 303,607.19

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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.