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Finding the Fourth Proportional to 216,421.92, 324,351.81 and 88,188.66

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Solution

The fourth proportional to 216,421.92, 324,351.81 and 88,188.66 is: 132,168.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,421.92 : 324,351.81 = 88,188.66 : x
  2. Step 2: Convert to fraction form
    216,421.92/324,351.81 = 88,188.66/x
  3. Step 3: Cross multiply
    216,421.92x = 324,351.81 × 88,188.66
  4. Step 4: Simplify right side
    216,421.92x = 28,604,151,492.47
  5. Step 5: Solve for x
    x = 28,604,151,492.47/216,421.92
  6. Step 6: Final answer
    x = 132,168.46

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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.