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Finding the Fourth Proportional to 551,346.40, 827,019.60 and 177,407.20

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Solution

The fourth proportional to 551,346.40, 827,019.60 and 177,407.20 is: 266,110.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,346.40 : 827,019.60 = 177,407.20 : x
  2. Step 2: Convert to fraction form
    551,346.40/827,019.60 = 177,407.20/x
  3. Step 3: Cross multiply
    551,346.40x = 827,019.60 × 177,407.20
  4. Step 4: Simplify right side
    551,346.40x = 146,719,231,581.12
  5. Step 5: Solve for x
    x = 146,719,231,581.12/551,346.40
  6. Step 6: Final answer
    x = 266,110.80

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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.