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Finding the Fourth Proportional to 307,663.31, 424,596.67 and 171,723.71

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Solution

The fourth proportional to 307,663.31, 424,596.67 and 171,723.71 is: 236,990.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,663.31 : 424,596.67 = 171,723.71 : x
  2. Step 2: Convert to fraction form
    307,663.31/424,596.67 = 171,723.71/x
  3. Step 3: Cross multiply
    307,663.31x = 424,596.67 × 171,723.71
  4. Step 4: Simplify right side
    307,663.31x = 72,913,316,058.23
  5. Step 5: Solve for x
    x = 72,913,316,058.23/307,663.31
  6. Step 6: Final answer
    x = 236,990.61

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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.