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Finding the Fourth Proportional to 216,145.40, 324,023.70 and 141,301.40

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Solution

The fourth proportional to 216,145.40, 324,023.70 and 141,301.40 is: 211,825.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,145.40 : 324,023.70 = 141,301.40 : x
  2. Step 2: Convert to fraction form
    216,145.40/324,023.70 = 141,301.40/x
  3. Step 3: Cross multiply
    216,145.40x = 324,023.70 × 141,301.40
  4. Step 4: Simplify right side
    216,145.40x = 45,785,002,443.18
  5. Step 5: Solve for x
    x = 45,785,002,443.18/216,145.40
  6. Step 6: Final answer
    x = 211,825.01

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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.