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Finding the Fourth Proportional to 253,018.89, 349,188.30 and 139,863.51

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Solution

The fourth proportional to 253,018.89, 349,188.30 and 139,863.51 is: 193,023.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,018.89 : 349,188.30 = 139,863.51 : x
  2. Step 2: Convert to fraction form
    253,018.89/349,188.30 = 139,863.51/x
  3. Step 3: Cross multiply
    253,018.89x = 349,188.30 × 139,863.51
  4. Step 4: Simplify right side
    253,018.89x = 48,838,701,288.93
  5. Step 5: Solve for x
    x = 48,838,701,288.93/253,018.89
  6. Step 6: Final answer
    x = 193,023.93

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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.