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Finding the Fourth Proportional to 213,080.66, 319,537.49 and 79,888.31

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Solution

The fourth proportional to 213,080.66, 319,537.49 and 79,888.31 is: 119,801.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,080.66 : 319,537.49 = 79,888.31 : x
  2. Step 2: Convert to fraction form
    213,080.66/319,537.49 = 79,888.31/x
  3. Step 3: Cross multiply
    213,080.66x = 319,537.49 × 79,888.31
  4. Step 4: Simplify right side
    213,080.66x = 25,527,308,060.61
  5. Step 5: Solve for x
    x = 25,527,308,060.61/213,080.66
  6. Step 6: Final answer
    x = 119,801.15

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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.