Home / 315,642.08-435,579.02-172,402.64

Finding the Fourth Proportional to 315,642.08, 435,579.02 and 172,402.64

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Solution

The fourth proportional to 315,642.08, 435,579.02 and 172,402.64 is: 237,911.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,642.08 : 435,579.02 = 172,402.64 : x
  2. Step 2: Convert to fraction form
    315,642.08/435,579.02 = 172,402.64/x
  3. Step 3: Cross multiply
    315,642.08x = 435,579.02 × 172,402.64
  4. Step 4: Simplify right side
    315,642.08x = 75,094,972,976.61
  5. Step 5: Solve for x
    x = 75,094,972,976.61/315,642.08
  6. Step 6: Final answer
    x = 237,911.79

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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.