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Finding the Fourth Proportional to 549,989.28, 824,987.57 and 213,067.35

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Solution

The fourth proportional to 549,989.28, 824,987.57 and 213,067.35 is: 319,602.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,989.28 : 824,987.57 = 213,067.35 : x
  2. Step 2: Convert to fraction form
    549,989.28/824,987.57 = 213,067.35/x
  3. Step 3: Cross multiply
    549,989.28x = 824,987.57 × 213,067.35
  4. Step 4: Simplify right side
    549,989.28x = 175,777,914,257.50
  5. Step 5: Solve for x
    x = 175,777,914,257.50/549,989.28
  6. Step 6: Final answer
    x = 319,602.44

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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.