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Finding the Fourth Proportional to 375,439.71, 563,153.54 and 91,132.59

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Solution

The fourth proportional to 375,439.71, 563,153.54 and 91,132.59 is: 136,697.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,439.71 : 563,153.54 = 91,132.59 : x
  2. Step 2: Convert to fraction form
    375,439.71/563,153.54 = 91,132.59/x
  3. Step 3: Cross multiply
    375,439.71x = 563,153.54 × 91,132.59
  4. Step 4: Simplify right side
    375,439.71x = 51,321,640,212.21
  5. Step 5: Solve for x
    x = 51,321,640,212.21/375,439.71
  6. Step 6: Final answer
    x = 136,697.42

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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.