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Finding the Fourth Proportional to 291,936.75, 402,872.76 and 157,800.75

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Solution

The fourth proportional to 291,936.75, 402,872.76 and 157,800.75 is: 217,765.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,936.75 : 402,872.76 = 157,800.75 : x
  2. Step 2: Convert to fraction form
    291,936.75/402,872.76 = 157,800.75/x
  3. Step 3: Cross multiply
    291,936.75x = 402,872.76 × 157,800.75
  4. Step 4: Simplify right side
    291,936.75x = 63,573,623,682.57
  5. Step 5: Solve for x
    x = 63,573,623,682.57/291,936.75
  6. Step 6: Final answer
    x = 217,765.06

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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.