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Finding the Fourth Proportional to 365,801.12, 548,645.08 and 141,128.79

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Solution

The fourth proportional to 365,801.12, 548,645.08 and 141,128.79 is: 211,671.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,801.12 : 548,645.08 = 141,128.79 : x
  2. Step 2: Convert to fraction form
    365,801.12/548,645.08 = 141,128.79/x
  3. Step 3: Cross multiply
    365,801.12x = 548,645.08 × 141,128.79
  4. Step 4: Simplify right side
    365,801.12x = 77,429,616,279.85
  5. Step 5: Solve for x
    x = 77,429,616,279.85/365,801.12
  6. Step 6: Final answer
    x = 211,671.35

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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.