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Finding the Fourth Proportional to 253,935.80, 350,435.33 and 139,225.42

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Solution

The fourth proportional to 253,935.80, 350,435.33 and 139,225.42 is: 192,133.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,935.80 : 350,435.33 = 139,225.42 : x
  2. Step 2: Convert to fraction form
    253,935.80/350,435.33 = 139,225.42/x
  3. Step 3: Cross multiply
    253,935.80x = 350,435.33 × 139,225.42
  4. Step 4: Simplify right side
    253,935.80x = 48,789,506,002.09
  5. Step 5: Solve for x
    x = 48,789,506,002.09/253,935.80
  6. Step 6: Final answer
    x = 192,133.23

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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.