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Finding the Fourth Proportional to 353,645.92, 530,463.66 and 87,406.46

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Solution

The fourth proportional to 353,645.92, 530,463.66 and 87,406.46 is: 131,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,645.92 : 530,463.66 = 87,406.46 : x
  2. Step 2: Convert to fraction form
    353,645.92/530,463.66 = 87,406.46/x
  3. Step 3: Cross multiply
    353,645.92x = 530,463.66 × 87,406.46
  4. Step 4: Simplify right side
    353,645.92x = 46,365,950,679.24
  5. Step 5: Solve for x
    x = 46,365,950,679.24/353,645.92
  6. Step 6: Final answer
    x = 131,108.40

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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.