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Finding the Fourth Proportional to 253,983.98, 350,483.28 and 139,240.46

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Solution

The fourth proportional to 253,983.98, 350,483.28 and 139,240.46 is: 192,143.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,983.98 : 350,483.28 = 139,240.46 : x
  2. Step 2: Convert to fraction form
    253,983.98/350,483.28 = 139,240.46/x
  3. Step 3: Cross multiply
    253,983.98x = 350,483.28 × 139,240.46
  4. Step 4: Simplify right side
    253,983.98x = 48,801,453,129.51
  5. Step 5: Solve for x
    x = 48,801,453,129.51/253,983.98
  6. Step 6: Final answer
    x = 192,143.82

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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.