Home / 356,457.12-491,904.40-211,360.56

Finding the Fourth Proportional to 356,457.12, 491,904.40 and 211,360.56

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Solution

The fourth proportional to 356,457.12, 491,904.40 and 211,360.56 is: 291,673.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,457.12 : 491,904.40 = 211,360.56 : x
  2. Step 2: Convert to fraction form
    356,457.12/491,904.40 = 211,360.56/x
  3. Step 3: Cross multiply
    356,457.12x = 491,904.40 × 211,360.56
  4. Step 4: Simplify right side
    356,457.12x = 103,969,189,450.46
  5. Step 5: Solve for x
    x = 103,969,189,450.46/356,457.12
  6. Step 6: Final answer
    x = 291,673.76

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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.