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Finding the Fourth Proportional to 315,497.52, 435,383.28 and 172,257.12

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Solution

The fourth proportional to 315,497.52, 435,383.28 and 172,257.12 is: 237,713.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,497.52 : 435,383.28 = 172,257.12 : x
  2. Step 2: Convert to fraction form
    315,497.52/435,383.28 = 172,257.12/x
  3. Step 3: Cross multiply
    315,497.52x = 435,383.28 × 172,257.12
  4. Step 4: Simplify right side
    315,497.52x = 74,997,869,908.95
  5. Step 5: Solve for x
    x = 74,997,869,908.95/315,497.52
  6. Step 6: Final answer
    x = 237,713.03

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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.