Home / 351,888.40-485,357.16-215,929.36

Finding the Fourth Proportional to 351,888.40, 485,357.16 and 215,929.36

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Solution

The fourth proportional to 351,888.40, 485,357.16 and 215,929.36 is: 297,829.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,888.40 : 485,357.16 = 215,929.36 : x
  2. Step 2: Convert to fraction form
    351,888.40/485,357.16 = 215,929.36/x
  3. Step 3: Cross multiply
    351,888.40x = 485,357.16 × 215,929.36
  4. Step 4: Simplify right side
    351,888.40x = 104,802,860,930.22
  5. Step 5: Solve for x
    x = 104,802,860,930.22/351,888.40
  6. Step 6: Final answer
    x = 297,829.83

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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.