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Finding the Fourth Proportional to 549,576.57, 824,369.30 and 212,655.78

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Solution

The fourth proportional to 549,576.57, 824,369.30 and 212,655.78 is: 318,985.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,576.57 : 824,369.30 = 212,655.78 : x
  2. Step 2: Convert to fraction form
    549,576.57/824,369.30 = 212,655.78/x
  3. Step 3: Cross multiply
    549,576.57x = 824,369.30 × 212,655.78
  4. Step 4: Simplify right side
    549,576.57x = 175,306,895,436.28
  5. Step 5: Solve for x
    x = 175,306,895,436.28/549,576.57
  6. Step 6: Final answer
    x = 318,985.39

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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.