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Finding the Fourth Proportional to 355,477.85, 490,565.27 and 212,250.41

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Solution

The fourth proportional to 355,477.85, 490,565.27 and 212,250.41 is: 292,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,477.85 : 490,565.27 = 212,250.41 : x
  2. Step 2: Convert to fraction form
    355,477.85/490,565.27 = 212,250.41/x
  3. Step 3: Cross multiply
    355,477.85x = 490,565.27 × 212,250.41
  4. Step 4: Simplify right side
    355,477.85x = 104,122,678,628.01
  5. Step 5: Solve for x
    x = 104,122,678,628.01/355,477.85
  6. Step 6: Final answer
    x = 292,909.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.