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Finding the Fourth Proportional to 216,975.36, 325,233.41 and 98,729.74

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Solution

The fourth proportional to 216,975.36, 325,233.41 and 98,729.74 is: 147,990.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,975.36 : 325,233.41 = 98,729.74 : x
  2. Step 2: Convert to fraction form
    216,975.36/325,233.41 = 98,729.74/x
  3. Step 3: Cross multiply
    216,975.36x = 325,233.41 × 98,729.74
  4. Step 4: Simplify right side
    216,975.36x = 32,110,208,701.88
  5. Step 5: Solve for x
    x = 32,110,208,701.88/216,975.36
  6. Step 6: Final answer
    x = 147,990.12

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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.