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Finding the Fourth Proportional to 352,850.58, 487,010.79 and 217,001.40

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Solution

The fourth proportional to 352,850.58, 487,010.79 and 217,001.40 is: 299,509.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,850.58 : 487,010.79 = 217,001.40 : x
  2. Step 2: Convert to fraction form
    352,850.58/487,010.79 = 217,001.40/x
  3. Step 3: Cross multiply
    352,850.58x = 487,010.79 × 217,001.40
  4. Step 4: Simplify right side
    352,850.58x = 105,682,023,245.11
  5. Step 5: Solve for x
    x = 105,682,023,245.11/352,850.58
  6. Step 6: Final answer
    x = 299,509.28

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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.