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Finding the Fourth Proportional to 545,136.30, 817,704.45 and 308,940.30

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Solution

The fourth proportional to 545,136.30, 817,704.45 and 308,940.30 is: 463,410.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,136.30 : 817,704.45 = 308,940.30 : x
  2. Step 2: Convert to fraction form
    545,136.30/817,704.45 = 308,940.30/x
  3. Step 3: Cross multiply
    545,136.30x = 817,704.45 × 308,940.30
  4. Step 4: Simplify right side
    545,136.30x = 252,621,858,094.34
  5. Step 5: Solve for x
    x = 252,621,858,094.34/545,136.30
  6. Step 6: Final answer
    x = 463,410.45

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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.