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Finding the Fourth Proportional to 277,306.80, 415,960.20 and 90,318.30

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Solution

The fourth proportional to 277,306.80, 415,960.20 and 90,318.30 is: 135,477.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,306.80 : 415,960.20 = 90,318.30 : x
  2. Step 2: Convert to fraction form
    277,306.80/415,960.20 = 90,318.30/x
  3. Step 3: Cross multiply
    277,306.80x = 415,960.20 × 90,318.30
  4. Step 4: Simplify right side
    277,306.80x = 37,568,818,131.66
  5. Step 5: Solve for x
    x = 37,568,818,131.66/277,306.80
  6. Step 6: Final answer
    x = 135,477.45

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1.5x scale

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.