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Finding the Fourth Proportional to 358,564.80, 536,680.80 and 279,249.60

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Solution

The fourth proportional to 358,564.80, 536,680.80 and 279,249.60 is: 417,966.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,564.80 : 536,680.80 = 279,249.60 : x
  2. Step 2: Convert to fraction form
    358,564.80/536,680.80 = 279,249.60/x
  3. Step 3: Cross multiply
    358,564.80x = 536,680.80 × 279,249.60
  4. Step 4: Simplify right side
    358,564.80x = 149,867,898,727.68
  5. Step 5: Solve for x
    x = 149,867,898,727.68/358,564.80
  6. Step 6: Final answer
    x = 417,966.01

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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.