Home / 216,004.20-324,006.30-145,145.40

Finding the Fourth Proportional to 216,004.20, 324,006.30 and 145,145.40

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Solution

The fourth proportional to 216,004.20, 324,006.30 and 145,145.40 is: 217,718.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,004.20 : 324,006.30 = 145,145.40 : x
  2. Step 2: Convert to fraction form
    216,004.20/324,006.30 = 145,145.40/x
  3. Step 3: Cross multiply
    216,004.20x = 324,006.30 × 145,145.40
  4. Step 4: Simplify right side
    216,004.20x = 47,028,024,016.02
  5. Step 5: Solve for x
    x = 47,028,024,016.02/216,004.20
  6. Step 6: Final answer
    x = 217,718.10

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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.