Home / 315,724.53-435,693-172,485.36

Finding the Fourth Proportional to 315,724.53, 435,693 and 172,485.36

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Solution

The fourth proportional to 315,724.53, 435,693 and 172,485.36 is: 238,026.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,724.53 : 435,693 = 172,485.36 : x
  2. Step 2: Convert to fraction form
    315,724.53/435,693 = 172,485.36/x
  3. Step 3: Cross multiply
    315,724.53x = 435,693 × 172,485.36
  4. Step 4: Simplify right side
    315,724.53x = 75,150,663,954.48
  5. Step 5: Solve for x
    x = 75,150,663,954.48/315,724.53
  6. Step 6: Final answer
    x = 238,026.05

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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.