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Finding the Fourth Proportional to 236,820.80, 355,231.20 and 148,347.20

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Solution

The fourth proportional to 236,820.80, 355,231.20 and 148,347.20 is: 222,520.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,820.80 : 355,231.20 = 148,347.20 : x
  2. Step 2: Convert to fraction form
    236,820.80/355,231.20 = 148,347.20/x
  3. Step 3: Cross multiply
    236,820.80x = 355,231.20 × 148,347.20
  4. Step 4: Simplify right side
    236,820.80x = 52,697,553,872.64
  5. Step 5: Solve for x
    x = 52,697,553,872.64/236,820.80
  6. Step 6: Final answer
    x = 222,520.80

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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.