Home / 217,751.28-326,056.68-142,635.12

Finding the Fourth Proportional to 217,751.28, 326,056.68 and 142,635.12

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Solution

The fourth proportional to 217,751.28, 326,056.68 and 142,635.12 is: 213,579.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,751.28 : 326,056.68 = 142,635.12 : x
  2. Step 2: Convert to fraction form
    217,751.28/326,056.68 = 142,635.12/x
  3. Step 3: Cross multiply
    217,751.28x = 326,056.68 × 142,635.12
  4. Step 4: Simplify right side
    217,751.28x = 46,507,133,678.60
  5. Step 5: Solve for x
    x = 46,507,133,678.60/217,751.28
  6. Step 6: Final answer
    x = 213,579.15

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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.