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Finding the Fourth Proportional to 375,429.66, 563,139.75 and 91,122.57

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Solution

The fourth proportional to 375,429.66, 563,139.75 and 91,122.57 is: 136,682.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,429.66 : 563,139.75 = 91,122.57 : x
  2. Step 2: Convert to fraction form
    375,429.66/563,139.75 = 91,122.57/x
  3. Step 3: Cross multiply
    375,429.66x = 563,139.75 × 91,122.57
  4. Step 4: Simplify right side
    375,429.66x = 51,314,741,289.16
  5. Step 5: Solve for x
    x = 51,314,741,289.16/375,429.66
  6. Step 6: Final answer
    x = 136,682.70

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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.