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Finding the Fourth Proportional to 213,086.80, 319,630.20 and 119,580.40

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Solution

The fourth proportional to 213,086.80, 319,630.20 and 119,580.40 is: 179,370.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,086.80 : 319,630.20 = 119,580.40 : x
  2. Step 2: Convert to fraction form
    213,086.80/319,630.20 = 119,580.40/x
  3. Step 3: Cross multiply
    213,086.80x = 319,630.20 × 119,580.40
  4. Step 4: Simplify right side
    213,086.80x = 38,221,507,168.08
  5. Step 5: Solve for x
    x = 38,221,507,168.08/213,086.80
  6. Step 6: Final answer
    x = 179,370.60

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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.