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Finding the Fourth Proportional to 216,570.32, 324,815.88 and 98,213.12

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Solution

The fourth proportional to 216,570.32, 324,815.88 and 98,213.12 is: 147,301.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,570.32 : 324,815.88 = 98,213.12 : x
  2. Step 2: Convert to fraction form
    216,570.32/324,815.88 = 98,213.12/x
  3. Step 3: Cross multiply
    216,570.32x = 324,815.88 × 98,213.12
  4. Step 4: Simplify right side
    216,570.32x = 31,901,181,000.35
  5. Step 5: Solve for x
    x = 31,901,181,000.35/216,570.32
  6. Step 6: Final answer
    x = 147,301.72

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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.