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Finding the Fourth Proportional to 570,161.61, 855,438.03 and 215,277.12

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Solution

The fourth proportional to 570,161.61, 855,438.03 and 215,277.12 is: 322,989.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,161.61 : 855,438.03 = 215,277.12 : x
  2. Step 2: Convert to fraction form
    570,161.61/855,438.03 = 215,277.12/x
  3. Step 3: Cross multiply
    570,161.61x = 855,438.03 × 215,277.12
  4. Step 4: Simplify right side
    570,161.61x = 184,156,235,436.87
  5. Step 5: Solve for x
    x = 184,156,235,436.87/570,161.61
  6. Step 6: Final answer
    x = 322,989.54

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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.