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Finding the Fourth Proportional to 313,399.42, 432,847.29 and 211,248.70

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Solution

The fourth proportional to 313,399.42, 432,847.29 and 211,248.70 is: 291,763.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,399.42 : 432,847.29 = 211,248.70 : x
  2. Step 2: Convert to fraction form
    313,399.42/432,847.29 = 211,248.70/x
  3. Step 3: Cross multiply
    313,399.42x = 432,847.29 × 211,248.70
  4. Step 4: Simplify right side
    313,399.42x = 91,438,427,311.02
  5. Step 5: Solve for x
    x = 91,438,427,311.02/313,399.42
  6. Step 6: Final answer
    x = 291,763.23

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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.