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Finding the Fourth Proportional to 549,659.70, 824,009.55 and 212,930.10

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Solution

The fourth proportional to 549,659.70, 824,009.55 and 212,930.10 is: 319,209.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,659.70 : 824,009.55 = 212,930.10 : x
  2. Step 2: Convert to fraction form
    549,659.70/824,009.55 = 212,930.10/x
  3. Step 3: Cross multiply
    549,659.70x = 824,009.55 × 212,930.10
  4. Step 4: Simplify right side
    549,659.70x = 175,456,435,882.46
  5. Step 5: Solve for x
    x = 175,456,435,882.46/549,659.70
  6. Step 6: Final answer
    x = 319,209.21

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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.