Home / 315,905.36-435,937.52-172,664.24

Finding the Fourth Proportional to 315,905.36, 435,937.52 and 172,664.24

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Solution

The fourth proportional to 315,905.36, 435,937.52 and 172,664.24 is: 238,270.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,905.36 : 435,937.52 = 172,664.24 : x
  2. Step 2: Convert to fraction form
    315,905.36/435,937.52 = 172,664.24/x
  3. Step 3: Cross multiply
    315,905.36x = 435,937.52 × 172,664.24
  4. Step 4: Simplify right side
    315,905.36x = 75,270,820,578.28
  5. Step 5: Solve for x
    x = 75,270,820,578.28/315,905.36
  6. Step 6: Final answer
    x = 238,270.16

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1.5x scale

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.