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Finding the Fourth Proportional to 291,512.70, 402,150.06 and 170,579.79

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Solution

The fourth proportional to 291,512.70, 402,150.06 and 170,579.79 is: 235,319.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,512.70 : 402,150.06 = 170,579.79 : x
  2. Step 2: Convert to fraction form
    291,512.70/402,150.06 = 170,579.79/x
  3. Step 3: Cross multiply
    291,512.70x = 402,150.06 × 170,579.79
  4. Step 4: Simplify right side
    291,512.70x = 68,598,672,783.29
  5. Step 5: Solve for x
    x = 68,598,672,783.29/291,512.70
  6. Step 6: Final answer
    x = 235,319.67

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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.