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Finding the Fourth Proportional to 386,655.37, 580,034.00 and 143,463.37

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Solution

The fourth proportional to 386,655.37, 580,034.00 and 143,463.37 is: 215,213.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,655.37 : 580,034.00 = 143,463.37 : x
  2. Step 2: Convert to fraction form
    386,655.37/580,034.00 = 143,463.37/x
  3. Step 3: Cross multiply
    386,655.37x = 580,034.00 × 143,463.37
  4. Step 4: Simplify right side
    386,655.37x = 83,213,631,263.15
  5. Step 5: Solve for x
    x = 83,213,631,263.15/386,655.37
  6. Step 6: Final answer
    x = 215,213.96

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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.