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Finding the Fourth Proportional to 313,365.70, 432,568.11 and 211,451.50

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Solution

The fourth proportional to 313,365.70, 432,568.11 and 211,451.50 is: 291,886.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,365.70 : 432,568.11 = 211,451.50 : x
  2. Step 2: Convert to fraction form
    313,365.70/432,568.11 = 211,451.50/x
  3. Step 3: Cross multiply
    313,365.70x = 432,568.11 × 211,451.50
  4. Step 4: Simplify right side
    313,365.70x = 91,467,175,711.67
  5. Step 5: Solve for x
    x = 91,467,175,711.67/313,365.70
  6. Step 6: Final answer
    x = 291,886.37

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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.