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Finding the Fourth Proportional to 578,145.98, 866,720.62 and 223,408.91

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Solution

The fourth proportional to 578,145.98, 866,720.62 and 223,408.91 is: 334,920.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,145.98 : 866,720.62 = 223,408.91 : x
  2. Step 2: Convert to fraction form
    578,145.98/866,720.62 = 223,408.91/x
  3. Step 3: Cross multiply
    578,145.98x = 866,720.62 × 223,408.91
  4. Step 4: Simplify right side
    578,145.98x = 193,633,108,988.72
  5. Step 5: Solve for x
    x = 193,633,108,988.72/578,145.98
  6. Step 6: Final answer
    x = 334,920.79

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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.