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Finding the Fourth Proportional to 216,763.80, 324,922.21 and 90,477.53

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Solution

The fourth proportional to 216,763.80, 324,922.21 and 90,477.53 is: 135,623.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,763.80 : 324,922.21 = 90,477.53 : x
  2. Step 2: Convert to fraction form
    216,763.80/324,922.21 = 90,477.53/x
  3. Step 3: Cross multiply
    216,763.80x = 324,922.21 × 90,477.53
  4. Step 4: Simplify right side
    216,763.80x = 29,398,159,538.91
  5. Step 5: Solve for x
    x = 29,398,159,538.91/216,763.80
  6. Step 6: Final answer
    x = 135,623.01

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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.