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Finding the Fourth Proportional to 303,590.89, 455,393.63 and 103,909.96

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Solution

The fourth proportional to 303,590.89, 455,393.63 and 103,909.96 is: 155,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,590.89 : 455,393.63 = 103,909.96 : x
  2. Step 2: Convert to fraction form
    303,590.89/455,393.63 = 103,909.96/x
  3. Step 3: Cross multiply
    303,590.89x = 455,393.63 × 103,909.96
  4. Step 4: Simplify right side
    303,590.89x = 47,319,933,877.55
  5. Step 5: Solve for x
    x = 47,319,933,877.55/303,590.89
  6. Step 6: Final answer
    x = 155,867.44

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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.