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Finding the Fourth Proportional to 388,805.15, 536,562.48 and 227,645.12

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Solution

The fourth proportional to 388,805.15, 536,562.48 and 227,645.12 is: 314,156.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,805.15 : 536,562.48 = 227,645.12 : x
  2. Step 2: Convert to fraction form
    388,805.15/536,562.48 = 227,645.12/x
  3. Step 3: Cross multiply
    388,805.15x = 536,562.48 × 227,645.12
  4. Step 4: Simplify right side
    388,805.15x = 122,145,827,464.29
  5. Step 5: Solve for x
    x = 122,145,827,464.29/388,805.15
  6. Step 6: Final answer
    x = 314,156.92

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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.