Home / 213,538.20-319,724.10-154,051.80

Finding the Fourth Proportional to 213,538.20, 319,724.10 and 154,051.80

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Solution

The fourth proportional to 213,538.20, 319,724.10 and 154,051.80 is: 230,656.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,538.20 : 319,724.10 = 154,051.80 : x
  2. Step 2: Convert to fraction form
    213,538.20/319,724.10 = 154,051.80/x
  3. Step 3: Cross multiply
    213,538.20x = 319,724.10 × 154,051.80
  4. Step 4: Simplify right side
    213,538.20x = 49,254,073,108.38
  5. Step 5: Solve for x
    x = 49,254,073,108.38/213,538.20
  6. Step 6: Final answer
    x = 230,656.96

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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.