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Finding the Fourth Proportional to 253,983.48, 350,482.59 and 139,239.96

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Solution

The fourth proportional to 253,983.48, 350,482.59 and 139,239.96 is: 192,143.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,983.48 : 350,482.59 = 139,239.96 : x
  2. Step 2: Convert to fraction form
    253,983.48/350,482.59 = 139,239.96/x
  3. Step 3: Cross multiply
    253,983.48x = 350,482.59 × 139,239.96
  4. Step 4: Simplify right side
    253,983.48x = 48,801,181,812.30
  5. Step 5: Solve for x
    x = 48,801,181,812.30/253,983.48
  6. Step 6: Final answer
    x = 192,143.13

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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.