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Finding the Fourth Proportional to 213,244.20, 319,866.70 and 55,472.40

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Solution

The fourth proportional to 213,244.20, 319,866.70 and 55,472.40 is: 83,208.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,244.20 : 319,866.70 = 55,472.40 : x
  2. Step 2: Convert to fraction form
    213,244.20/319,866.70 = 55,472.40/x
  3. Step 3: Cross multiply
    213,244.20x = 319,866.70 × 55,472.40
  4. Step 4: Simplify right side
    213,244.20x = 17,743,773,529.08
  5. Step 5: Solve for x
    x = 17,743,773,529.08/213,244.20
  6. Step 6: Final answer
    x = 83,208.70

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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.