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Finding the Fourth Proportional to 353,374.33, 530,067.12 and 87,134.93

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Solution

The fourth proportional to 353,374.33, 530,067.12 and 87,134.93 is: 130,703.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,374.33 : 530,067.12 = 87,134.93 : x
  2. Step 2: Convert to fraction form
    353,374.33/530,067.12 = 87,134.93/x
  3. Step 3: Cross multiply
    353,374.33x = 530,067.12 × 87,134.93
  4. Step 4: Simplify right side
    353,374.33x = 46,187,361,396.50
  5. Step 5: Solve for x
    x = 46,187,361,396.50/353,374.33
  6. Step 6: Final answer
    x = 130,703.78

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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.