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Finding the Fourth Proportional to 277,013.54, 415,535.70 and 87,478.40

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Solution

The fourth proportional to 277,013.54, 415,535.70 and 87,478.40 is: 131,222.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,013.54 : 415,535.70 = 87,478.40 : x
  2. Step 2: Convert to fraction form
    277,013.54/415,535.70 = 87,478.40/x
  3. Step 3: Cross multiply
    277,013.54x = 415,535.70 × 87,478.40
  4. Step 4: Simplify right side
    277,013.54x = 36,350,398,178.88
  5. Step 5: Solve for x
    x = 36,350,398,178.88/277,013.54
  6. Step 6: Final answer
    x = 131,222.46

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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.