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Finding the Fourth Proportional to 527,999.80, 791,708.10 and 212,099.80

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Solution

The fourth proportional to 527,999.80, 791,708.10 and 212,099.80 is: 318,032.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,999.80 : 791,708.10 = 212,099.80 : x
  2. Step 2: Convert to fraction form
    527,999.80/791,708.10 = 212,099.80/x
  3. Step 3: Cross multiply
    527,999.80x = 791,708.10 × 212,099.80
  4. Step 4: Simplify right side
    527,999.80x = 167,921,129,668.38
  5. Step 5: Solve for x
    x = 167,921,129,668.38/527,999.80
  6. Step 6: Final answer
    x = 318,032.56

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1.5x scale

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.