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Finding the Fourth Proportional to 303,958.60, 455,281.80 and 197,670.40

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Solution

The fourth proportional to 303,958.60, 455,281.80 and 197,670.40 is: 296,078.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,958.60 : 455,281.80 = 197,670.40 : x
  2. Step 2: Convert to fraction form
    303,958.60/455,281.80 = 197,670.40/x
  3. Step 3: Cross multiply
    303,958.60x = 455,281.80 × 197,670.40
  4. Step 4: Simplify right side
    303,958.60x = 89,995,735,518.72
  5. Step 5: Solve for x
    x = 89,995,735,518.72/303,958.60
  6. Step 6: Final answer
    x = 296,078.92

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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.