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Finding the Fourth Proportional to 352,122.71, 485,854.54 and 208,929.29

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Solution

The fourth proportional to 352,122.71, 485,854.54 and 208,929.29 is: 288,278.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,122.71 : 485,854.54 = 208,929.29 : x
  2. Step 2: Convert to fraction form
    352,122.71/485,854.54 = 208,929.29/x
  3. Step 3: Cross multiply
    352,122.71x = 485,854.54 × 208,929.29
  4. Step 4: Simplify right side
    352,122.71x = 101,509,241,133.88
  5. Step 5: Solve for x
    x = 101,509,241,133.88/352,122.71
  6. Step 6: Final answer
    x = 288,278.03

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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.