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Finding the Fourth Proportional to 268,777.72, 402,808.26 and 100,128.23

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Solution

The fourth proportional to 268,777.72, 402,808.26 and 100,128.23 is: 150,058.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,777.72 : 402,808.26 = 100,128.23 : x
  2. Step 2: Convert to fraction form
    268,777.72/402,808.26 = 100,128.23/x
  3. Step 3: Cross multiply
    268,777.72x = 402,808.26 × 100,128.23
  4. Step 4: Simplify right side
    268,777.72x = 40,332,476,089.14
  5. Step 5: Solve for x
    x = 40,332,476,089.14/268,777.72
  6. Step 6: Final answer
    x = 150,058.85

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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.