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Finding the Fourth Proportional to 213,046.68, 319,570.08 and 72,806.52

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Solution

The fourth proportional to 213,046.68, 319,570.08 and 72,806.52 is: 109,209.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,046.68 : 319,570.08 = 72,806.52 : x
  2. Step 2: Convert to fraction form
    213,046.68/319,570.08 = 72,806.52/x
  3. Step 3: Cross multiply
    213,046.68x = 319,570.08 × 72,806.52
  4. Step 4: Simplify right side
    213,046.68x = 23,266,785,420.92
  5. Step 5: Solve for x
    x = 23,266,785,420.92/213,046.68
  6. Step 6: Final answer
    x = 109,209.80

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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.