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Finding the Fourth Proportional to 307,617.27, 424,510.44 and 171,643.29

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Solution

The fourth proportional to 307,617.27, 424,510.44 and 171,643.29 is: 236,866.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,617.27 : 424,510.44 = 171,643.29 : x
  2. Step 2: Convert to fraction form
    307,617.27/424,510.44 = 171,643.29/x
  3. Step 3: Cross multiply
    307,617.27x = 424,510.44 × 171,643.29
  4. Step 4: Simplify right side
    307,617.27x = 72,864,368,560.95
  5. Step 5: Solve for x
    x = 72,864,368,560.95/307,617.27
  6. Step 6: Final answer
    x = 236,866.96

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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.