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Finding the Fourth Proportional to 355,565.91, 533,349.38 and 145,203.85

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Solution

The fourth proportional to 355,565.91, 533,349.38 and 145,203.85 is: 217,805.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,565.91 : 533,349.38 = 145,203.85 : x
  2. Step 2: Convert to fraction form
    355,565.91/533,349.38 = 145,203.85/x
  3. Step 3: Cross multiply
    355,565.91x = 533,349.38 × 145,203.85
  4. Step 4: Simplify right side
    355,565.91x = 77,444,379,978.35
  5. Step 5: Solve for x
    x = 77,444,379,978.35/355,565.91
  6. Step 6: Final answer
    x = 217,805.98

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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.