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Finding the Fourth Proportional to 356,582.49, 534,874.34 and 90,342.78

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Solution

The fourth proportional to 356,582.49, 534,874.34 and 90,342.78 is: 135,514.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,582.49 : 534,874.34 = 90,342.78 : x
  2. Step 2: Convert to fraction form
    356,582.49/534,874.34 = 90,342.78/x
  3. Step 3: Cross multiply
    356,582.49x = 534,874.34 × 90,342.78
  4. Step 4: Simplify right side
    356,582.49x = 48,322,034,826.27
  5. Step 5: Solve for x
    x = 48,322,034,826.27/356,582.49
  6. Step 6: Final answer
    x = 135,514.32

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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.