Home / 277,278.40-415,917.66-77,628.19

Finding the Fourth Proportional to 277,278.40, 415,917.66 and 77,628.19

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Solution

The fourth proportional to 277,278.40, 415,917.66 and 77,628.19 is: 116,442.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,278.40 : 415,917.66 = 77,628.19 : x
  2. Step 2: Convert to fraction form
    277,278.40/415,917.66 = 77,628.19/x
  3. Step 3: Cross multiply
    277,278.40x = 415,917.66 × 77,628.19
  4. Step 4: Simplify right side
    277,278.40x = 32,286,935,945.84
  5. Step 5: Solve for x
    x = 32,286,935,945.84/277,278.40
  6. Step 6: Final answer
    x = 116,442.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.