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Finding the Fourth Proportional to 353,645.72, 530,463.32 and 87,406.22

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Solution

The fourth proportional to 353,645.72, 530,463.32 and 87,406.22 is: 131,108.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,645.72 : 530,463.32 = 87,406.22 : x
  2. Step 2: Convert to fraction form
    353,645.72/530,463.32 = 87,406.22/x
  3. Step 3: Cross multiply
    353,645.72x = 530,463.32 × 87,406.22
  4. Step 4: Simplify right side
    353,645.72x = 46,365,793,649.85
  5. Step 5: Solve for x
    x = 46,365,793,649.85/353,645.72
  6. Step 6: Final answer
    x = 131,108.03

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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.