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Finding the Fourth Proportional to 313,363.60, 470,045.40 and 279,246.40

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Solution

The fourth proportional to 313,363.60, 470,045.40 and 279,246.40 is: 418,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,363.60 : 470,045.40 = 279,246.40 : x
  2. Step 2: Convert to fraction form
    313,363.60/470,045.40 = 279,246.40/x
  3. Step 3: Cross multiply
    313,363.60x = 470,045.40 × 279,246.40
  4. Step 4: Simplify right side
    313,363.60x = 131,258,485,786.56
  5. Step 5: Solve for x
    x = 131,258,485,786.56/313,363.60
  6. Step 6: Final answer
    x = 418,869.60

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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.