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Finding the Fourth Proportional to 375,431.57, 563,141.39 and 91,124.48

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Solution

The fourth proportional to 375,431.57, 563,141.39 and 91,124.48 is: 136,685.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,431.57 : 563,141.39 = 91,124.48 : x
  2. Step 2: Convert to fraction form
    375,431.57/563,141.39 = 91,124.48/x
  3. Step 3: Cross multiply
    375,431.57x = 563,141.39 × 91,124.48
  4. Step 4: Simplify right side
    375,431.57x = 51,315,963,827.76
  5. Step 5: Solve for x
    x = 51,315,963,827.76/375,431.57
  6. Step 6: Final answer
    x = 136,685.26

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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.