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Finding the Fourth Proportional to 202,879.48, 279,981.93 and 112,233.89

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Solution

The fourth proportional to 202,879.48, 279,981.93 and 112,233.89 is: 154,887.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,879.48 : 279,981.93 = 112,233.89 : x
  2. Step 2: Convert to fraction form
    202,879.48/279,981.93 = 112,233.89/x
  3. Step 3: Cross multiply
    202,879.48x = 279,981.93 × 112,233.89
  4. Step 4: Simplify right side
    202,879.48x = 31,423,461,133.61
  5. Step 5: Solve for x
    x = 31,423,461,133.61/202,879.48
  6. Step 6: Final answer
    x = 154,887.33

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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.