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Finding the Fourth Proportional to 307,933.92, 424,718.64 and 207,312.48

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Solution

The fourth proportional to 307,933.92, 424,718.64 and 207,312.48 is: 285,936.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,933.92 : 424,718.64 = 207,312.48 : x
  2. Step 2: Convert to fraction form
    307,933.92/424,718.64 = 207,312.48/x
  3. Step 3: Cross multiply
    307,933.92x = 424,718.64 × 207,312.48
  4. Step 4: Simplify right side
    307,933.92x = 88,049,474,560.63
  5. Step 5: Solve for x
    x = 88,049,474,560.63/307,933.92
  6. Step 6: Final answer
    x = 285,936.26

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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.