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Finding the Fourth Proportional to 372,158.31, 513,567.50 and 211,028.07

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Solution

The fourth proportional to 372,158.31, 513,567.50 and 211,028.07 is: 291,212.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,158.31 : 513,567.50 = 211,028.07 : x
  2. Step 2: Convert to fraction form
    372,158.31/513,567.50 = 211,028.07/x
  3. Step 3: Cross multiply
    372,158.31x = 513,567.50 × 211,028.07
  4. Step 4: Simplify right side
    372,158.31x = 108,377,157,284.59
  5. Step 5: Solve for x
    x = 108,377,157,284.59/372,158.31
  6. Step 6: Final answer
    x = 291,212.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.