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Finding the Fourth Proportional to 549,418.98, 824,409.74 and 261,556.39

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Solution

The fourth proportional to 549,418.98, 824,409.74 and 261,556.39 is: 392,468.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,418.98 : 824,409.74 = 261,556.39 : x
  2. Step 2: Convert to fraction form
    549,418.98/824,409.74 = 261,556.39/x
  3. Step 3: Cross multiply
    549,418.98x = 824,409.74 × 261,556.39
  4. Step 4: Simplify right side
    549,418.98x = 215,629,634,068.11
  5. Step 5: Solve for x
    x = 215,629,634,068.11/549,418.98
  6. Step 6: Final answer
    x = 392,468.48

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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.