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Finding the Fourth Proportional to 324,486.72, 485,545.92 and 191,430.72

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Solution

The fourth proportional to 324,486.72, 485,545.92 and 191,430.72 is: 286,447.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,486.72 : 485,545.92 = 191,430.72 : x
  2. Step 2: Convert to fraction form
    324,486.72/485,545.92 = 191,430.72/x
  3. Step 3: Cross multiply
    324,486.72x = 485,545.92 × 191,430.72
  4. Step 4: Simplify right side
    324,486.72x = 92,948,405,058.66
  5. Step 5: Solve for x
    x = 92,948,405,058.66/324,486.72
  6. Step 6: Final answer
    x = 286,447.49

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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.