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Finding the Fourth Proportional to 545,106.80, 817,660.20 and 308,910.80

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Solution

The fourth proportional to 545,106.80, 817,660.20 and 308,910.80 is: 463,366.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,106.80 : 817,660.20 = 308,910.80 : x
  2. Step 2: Convert to fraction form
    545,106.80/817,660.20 = 308,910.80/x
  3. Step 3: Cross multiply
    545,106.80x = 817,660.20 × 308,910.80
  4. Step 4: Simplify right side
    545,106.80x = 252,584,066,510.16
  5. Step 5: Solve for x
    x = 252,584,066,510.16/545,106.80
  6. Step 6: Final answer
    x = 463,366.20

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Similar ratio
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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.