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Finding the Fourth Proportional to 356,357.40, 491,379.12 and 227,091.10

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Solution

The fourth proportional to 356,357.40, 491,379.12 and 227,091.10 is: 313,134.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,357.40 : 491,379.12 = 227,091.10 : x
  2. Step 2: Convert to fraction form
    356,357.40/491,379.12 = 227,091.10/x
  3. Step 3: Cross multiply
    356,357.40x = 491,379.12 × 227,091.10
  4. Step 4: Simplify right side
    356,357.40x = 111,587,824,877.83
  5. Step 5: Solve for x
    x = 111,587,824,877.83/356,357.40
  6. Step 6: Final answer
    x = 313,134.58

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1.5x scale

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.