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Finding the Fourth Proportional to 313,481.40, 432,736.72 and 211,644.76

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Solution

The fourth proportional to 313,481.40, 432,736.72 and 211,644.76 is: 292,159.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,481.40 : 432,736.72 = 211,644.76 : x
  2. Step 2: Convert to fraction form
    313,481.40/432,736.72 = 211,644.76/x
  3. Step 3: Cross multiply
    313,481.40x = 432,736.72 × 211,644.76
  4. Step 4: Simplify right side
    313,481.40x = 91,586,459,247.59
  5. Step 5: Solve for x
    x = 91,586,459,247.59/313,481.40
  6. Step 6: Final answer
    x = 292,159.15

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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.