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Finding the Fourth Proportional to 430,110.90, 644,279.40 and 252,078.30

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Solution

The fourth proportional to 430,110.90, 644,279.40 and 252,078.30 is: 377,597.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,110.90 : 644,279.40 = 252,078.30 : x
  2. Step 2: Convert to fraction form
    430,110.90/644,279.40 = 252,078.30/x
  3. Step 3: Cross multiply
    430,110.90x = 644,279.40 × 252,078.30
  4. Step 4: Simplify right side
    430,110.90x = 162,408,855,877.02
  5. Step 5: Solve for x
    x = 162,408,855,877.02/430,110.90
  6. Step 6: Final answer
    x = 377,597.63

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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.