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Finding the Fourth Proportional to 663,054.08, 994,346.88 and 213,756.80

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Solution

The fourth proportional to 663,054.08, 994,346.88 and 213,756.80 is: 320,559.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,054.08 : 994,346.88 = 213,756.80 : x
  2. Step 2: Convert to fraction form
    663,054.08/994,346.88 = 213,756.80/x
  3. Step 3: Cross multiply
    663,054.08x = 994,346.88 × 213,756.80
  4. Step 4: Simplify right side
    663,054.08x = 212,548,407,158.78
  5. Step 5: Solve for x
    x = 212,548,407,158.78/663,054.08
  6. Step 6: Final answer
    x = 320,559.69

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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.