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Finding the Fourth Proportional to 253,055.86, 349,203.45 and 139,871.86

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Solution

The fourth proportional to 253,055.86, 349,203.45 and 139,871.86 is: 193,015.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,055.86 : 349,203.45 = 139,871.86 : x
  2. Step 2: Convert to fraction form
    253,055.86/349,203.45 = 139,871.86/x
  3. Step 3: Cross multiply
    253,055.86x = 349,203.45 × 139,871.86
  4. Step 4: Simplify right side
    253,055.86x = 48,843,736,069.92
  5. Step 5: Solve for x
    x = 48,843,736,069.92/253,055.86
  6. Step 6: Final answer
    x = 193,015.63

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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.