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Finding the Fourth Proportional to 313,507.28, 470,258.36 and 126,515.92

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Solution

The fourth proportional to 313,507.28, 470,258.36 and 126,515.92 is: 189,772.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,507.28 : 470,258.36 = 126,515.92 : x
  2. Step 2: Convert to fraction form
    313,507.28/470,258.36 = 126,515.92/x
  3. Step 3: Cross multiply
    313,507.28x = 470,258.36 × 126,515.92
  4. Step 4: Simplify right side
    313,507.28x = 59,495,169,053.09
  5. Step 5: Solve for x
    x = 59,495,169,053.09/313,507.28
  6. Step 6: Final answer
    x = 189,772.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.