Home / 213,288.20-319,932.30-210,177.80

Finding the Fourth Proportional to 213,288.20, 319,932.30 and 210,177.80

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Solution

The fourth proportional to 213,288.20, 319,932.30 and 210,177.80 is: 315,266.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,288.20 : 319,932.30 = 210,177.80 : x
  2. Step 2: Convert to fraction form
    213,288.20/319,932.30 = 210,177.80/x
  3. Step 3: Cross multiply
    213,288.20x = 319,932.30 × 210,177.80
  4. Step 4: Simplify right side
    213,288.20x = 67,242,666,962.94
  5. Step 5: Solve for x
    x = 67,242,666,962.94/213,288.20
  6. Step 6: Final answer
    x = 315,266.70

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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.