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Finding the Fourth Proportional to 371,648.90, 512,866.85 and 216,590.26

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Solution

The fourth proportional to 371,648.90, 512,866.85 and 216,590.26 is: 298,889.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,648.90 : 512,866.85 = 216,590.26 : x
  2. Step 2: Convert to fraction form
    371,648.90/512,866.85 = 216,590.26/x
  3. Step 3: Cross multiply
    371,648.90x = 512,866.85 × 216,590.26
  4. Step 4: Simplify right side
    371,648.90x = 111,081,964,386.88
  5. Step 5: Solve for x
    x = 111,081,964,386.88/371,648.90
  6. Step 6: Final answer
    x = 298,889.53

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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.