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Finding the Fourth Proportional to 216,607.20, 324,912.20 and 141,790.16

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Solution

The fourth proportional to 216,607.20, 324,912.20 and 141,790.16 is: 212,686.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,607.20 : 324,912.20 = 141,790.16 : x
  2. Step 2: Convert to fraction form
    216,607.20/324,912.20 = 141,790.16/x
  3. Step 3: Cross multiply
    216,607.20x = 324,912.20 × 141,790.16
  4. Step 4: Simplify right side
    216,607.20x = 46,069,352,823.95
  5. Step 5: Solve for x
    x = 46,069,352,823.95/216,607.20
  6. Step 6: Final answer
    x = 212,686.16

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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.