Home / 645,025.77-967,164.78-218,419.20

Finding the Fourth Proportional to 645,025.77, 967,164.78 and 218,419.20

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Solution

The fourth proportional to 645,025.77, 967,164.78 and 218,419.20 is: 327,502.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,025.77 : 967,164.78 = 218,419.20 : x
  2. Step 2: Convert to fraction form
    645,025.77/967,164.78 = 218,419.20/x
  3. Step 3: Cross multiply
    645,025.77x = 967,164.78 × 218,419.20
  4. Step 4: Simplify right side
    645,025.77x = 211,247,357,515.78
  5. Step 5: Solve for x
    x = 211,247,357,515.78/645,025.77
  6. Step 6: Final answer
    x = 327,502.20

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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.