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Finding the Fourth Proportional to 356,400.88, 534,536.72 and 143,160.20

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Solution

The fourth proportional to 356,400.88, 534,536.72 and 143,160.20 is: 214,714.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,400.88 : 534,536.72 = 143,160.20 : x
  2. Step 2: Convert to fraction form
    356,400.88/534,536.72 = 143,160.20/x
  3. Step 3: Cross multiply
    356,400.88x = 534,536.72 × 143,160.20
  4. Step 4: Simplify right side
    356,400.88x = 76,524,383,742.54
  5. Step 5: Solve for x
    x = 76,524,383,742.54/356,400.88
  6. Step 6: Final answer
    x = 214,714.35

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1.5x scale

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.