Home / 356,631.95-491,865.11-313,519.26

Finding the Fourth Proportional to 356,631.95, 491,865.11 and 313,519.26

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Solution

The fourth proportional to 356,631.95, 491,865.11 and 313,519.26 is: 432,404.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,631.95 : 491,865.11 = 313,519.26 : x
  2. Step 2: Convert to fraction form
    356,631.95/491,865.11 = 313,519.26/x
  3. Step 3: Cross multiply
    356,631.95x = 491,865.11 × 313,519.26
  4. Step 4: Simplify right side
    356,631.95x = 154,209,183,739.42
  5. Step 5: Solve for x
    x = 154,209,183,739.42/356,631.95
  6. Step 6: Final answer
    x = 432,404.29

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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.