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Finding the Fourth Proportional to 326,475.36, 489,717.36 and 186,066.72

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Solution

The fourth proportional to 326,475.36, 489,717.36 and 186,066.72 is: 279,102.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,475.36 : 489,717.36 = 186,066.72 : x
  2. Step 2: Convert to fraction form
    326,475.36/489,717.36 = 186,066.72/x
  3. Step 3: Cross multiply
    326,475.36x = 489,717.36 × 186,066.72
  4. Step 4: Simplify right side
    326,475.36x = 91,120,102,902.26
  5. Step 5: Solve for x
    x = 91,120,102,902.26/326,475.36
  6. Step 6: Final answer
    x = 279,102.54

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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.