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Finding the Fourth Proportional to 368,422.80, 552,925.80 and 143,890.80

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Solution

The fourth proportional to 368,422.80, 552,925.80 and 143,890.80 is: 215,950.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,422.80 : 552,925.80 = 143,890.80 : x
  2. Step 2: Convert to fraction form
    368,422.80/552,925.80 = 143,890.80/x
  3. Step 3: Cross multiply
    368,422.80x = 552,925.80 × 143,890.80
  4. Step 4: Simplify right side
    368,422.80x = 79,560,935,702.64
  5. Step 5: Solve for x
    x = 79,560,935,702.64/368,422.80
  6. Step 6: Final answer
    x = 215,950.09

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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.