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Finding the Fourth Proportional to 213,122.98, 319,681.69 and 61,324.02

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Solution

The fourth proportional to 213,122.98, 319,681.69 and 61,324.02 is: 91,985.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,122.98 : 319,681.69 = 61,324.02 : x
  2. Step 2: Convert to fraction form
    213,122.98/319,681.69 = 61,324.02/x
  3. Step 3: Cross multiply
    213,122.98x = 319,681.69 × 61,324.02
  4. Step 4: Simplify right side
    213,122.98x = 19,604,166,197.88
  5. Step 5: Solve for x
    x = 19,604,166,197.88/213,122.98
  6. Step 6: Final answer
    x = 91,985.23

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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.