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Finding the Fourth Proportional to 361,404.18, 498,729.48 and 208,442.66

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Solution

The fourth proportional to 361,404.18, 498,729.48 and 208,442.66 is: 287,646.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,404.18 : 498,729.48 = 208,442.66 : x
  2. Step 2: Convert to fraction form
    361,404.18/498,729.48 = 208,442.66/x
  3. Step 3: Cross multiply
    361,404.18x = 498,729.48 × 208,442.66
  4. Step 4: Simplify right side
    361,404.18x = 103,956,499,431.62
  5. Step 5: Solve for x
    x = 103,956,499,431.62/361,404.18
  6. Step 6: Final answer
    x = 287,646.09

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1.5x scale

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.