Home / 315,346.28-435,171.81-172,107.35

Finding the Fourth Proportional to 315,346.28, 435,171.81 and 172,107.35

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Solution

The fourth proportional to 315,346.28, 435,171.81 and 172,107.35 is: 237,504.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,346.28 : 435,171.81 = 172,107.35 : x
  2. Step 2: Convert to fraction form
    315,346.28/435,171.81 = 172,107.35/x
  3. Step 3: Cross multiply
    315,346.28x = 435,171.81 × 172,107.35
  4. Step 4: Simplify right side
    315,346.28x = 74,896,266,147.14
  5. Step 5: Solve for x
    x = 74,896,266,147.14/315,346.28
  6. Step 6: Final answer
    x = 237,504.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.