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Finding the Fourth Proportional to 375,489.07, 563,228.30 and 91,181.77

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Solution

The fourth proportional to 375,489.07, 563,228.30 and 91,181.77 is: 136,771.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,489.07 : 563,228.30 = 91,181.77 : x
  2. Step 2: Convert to fraction form
    375,489.07/563,228.30 = 91,181.77/x
  3. Step 3: Cross multiply
    375,489.07x = 563,228.30 × 91,181.77
  4. Step 4: Simplify right side
    375,489.07x = 51,356,152,127.97
  5. Step 5: Solve for x
    x = 51,356,152,127.97/375,489.07
  6. Step 6: Final answer
    x = 136,771.36

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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.