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Finding the Fourth Proportional to 549,801.08, 824,442.81 and 212,999.43

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Solution

The fourth proportional to 549,801.08, 824,442.81 and 212,999.43 is: 319,398.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,801.08 : 824,442.81 = 212,999.43 : x
  2. Step 2: Convert to fraction form
    549,801.08/824,442.81 = 212,999.43/x
  3. Step 3: Cross multiply
    549,801.08x = 824,442.81 × 212,999.43
  4. Step 4: Simplify right side
    549,801.08x = 175,605,850,658.71
  5. Step 5: Solve for x
    x = 175,605,850,658.71/549,801.08
  6. Step 6: Final answer
    x = 319,398.88

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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.