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Finding the Fourth Proportional to 308,114.80, 462,172.20 and 266,124.40

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Solution

The fourth proportional to 308,114.80, 462,172.20 and 266,124.40 is: 399,186.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,114.80 : 462,172.20 = 266,124.40 : x
  2. Step 2: Convert to fraction form
    308,114.80/462,172.20 = 266,124.40/x
  3. Step 3: Cross multiply
    308,114.80x = 462,172.20 × 266,124.40
  4. Step 4: Simplify right side
    308,114.80x = 122,995,299,421.68
  5. Step 5: Solve for x
    x = 122,995,299,421.68/308,114.80
  6. Step 6: Final answer
    x = 399,186.60

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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.