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Finding the Fourth Proportional to 313,272.20, 469,908.30 and 144,792.20

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Solution

The fourth proportional to 313,272.20, 469,908.30 and 144,792.20 is: 217,188.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,272.20 : 469,908.30 = 144,792.20 : x
  2. Step 2: Convert to fraction form
    313,272.20/469,908.30 = 144,792.20/x
  3. Step 3: Cross multiply
    313,272.20x = 469,908.30 × 144,792.20
  4. Step 4: Simplify right side
    313,272.20x = 68,039,056,555.26
  5. Step 5: Solve for x
    x = 68,039,056,555.26/313,272.20
  6. Step 6: Final answer
    x = 217,188.30

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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.