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Finding the Fourth Proportional to 375,431.75, 563,141.65 and 91,124.65

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Solution

The fourth proportional to 375,431.75, 563,141.65 and 91,124.65 is: 136,685.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,431.75 : 563,141.65 = 91,124.65 : x
  2. Step 2: Convert to fraction form
    375,431.75/563,141.65 = 91,124.65/x
  3. Step 3: Cross multiply
    375,431.75x = 563,141.65 × 91,124.65
  4. Step 4: Simplify right side
    375,431.75x = 51,316,084,348.82
  5. Step 5: Solve for x
    x = 51,316,084,348.82/375,431.75
  6. Step 6: Final answer
    x = 136,685.52

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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.