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Finding the Fourth Proportional to 889,866.12, 1,334,788.03 and 215,953

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Solution

The fourth proportional to 889,866.12, 1,334,788.03 and 215,953 is: 323,926.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,866.12 : 1,334,788.03 = 215,953 : x
  2. Step 2: Convert to fraction form
    889,866.12/1,334,788.03 = 215,953/x
  3. Step 3: Cross multiply
    889,866.12x = 1,334,788.03 × 215,953
  4. Step 4: Simplify right side
    889,866.12x = 288,251,479,442.59
  5. Step 5: Solve for x
    x = 288,251,479,442.59/889,866.12
  6. Step 6: Final answer
    x = 323,926.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.