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Finding the Fourth Proportional to 213,449.85, 320,190.98 and 63,678.42

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Solution

The fourth proportional to 213,449.85, 320,190.98 and 63,678.42 is: 95,522.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,449.85 : 320,190.98 = 63,678.42 : x
  2. Step 2: Convert to fraction form
    213,449.85/320,190.98 = 63,678.42/x
  3. Step 3: Cross multiply
    213,449.85x = 320,190.98 × 63,678.42
  4. Step 4: Simplify right side
    213,449.85x = 20,389,255,386.26
  5. Step 5: Solve for x
    x = 20,389,255,386.26/213,449.85
  6. Step 6: Final answer
    x = 95,522.46

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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.