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Finding the Fourth Proportional to 570,655.82, 856,357.19 and 215,669.88

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Solution

The fourth proportional to 570,655.82, 856,357.19 and 215,669.88 is: 323,645.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,655.82 : 856,357.19 = 215,669.88 : x
  2. Step 2: Convert to fraction form
    570,655.82/856,357.19 = 215,669.88/x
  3. Step 3: Cross multiply
    570,655.82x = 856,357.19 × 215,669.88
  4. Step 4: Simplify right side
    570,655.82x = 184,690,452,404.44
  5. Step 5: Solve for x
    x = 184,690,452,404.44/570,655.82
  6. Step 6: Final answer
    x = 323,645.96

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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.