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Finding the Fourth Proportional to 253,071.54, 349,225.02 and 139,887

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Solution

The fourth proportional to 253,071.54, 349,225.02 and 139,887 is: 193,036.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,071.54 : 349,225.02 = 139,887 : x
  2. Step 2: Convert to fraction form
    253,071.54/349,225.02 = 139,887/x
  3. Step 3: Cross multiply
    253,071.54x = 349,225.02 × 139,887
  4. Step 4: Simplify right side
    253,071.54x = 48,852,040,372.74
  5. Step 5: Solve for x
    x = 48,852,040,372.74/253,071.54
  6. Step 6: Final answer
    x = 193,036.48

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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.