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Finding the Fourth Proportional to 547,581.12, 755,639.28 and 305,862.56

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Solution

The fourth proportional to 547,581.12, 755,639.28 and 305,862.56 is: 422,077.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,581.12 : 755,639.28 = 305,862.56 : x
  2. Step 2: Convert to fraction form
    547,581.12/755,639.28 = 305,862.56/x
  3. Step 3: Cross multiply
    547,581.12x = 755,639.28 × 305,862.56
  4. Step 4: Simplify right side
    547,581.12x = 231,121,764,617.36
  5. Step 5: Solve for x
    x = 231,121,764,617.36/547,581.12
  6. Step 6: Final answer
    x = 422,077.67

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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.