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Finding the Fourth Proportional to 303,495.60, 455,243.40 and 197,207.40

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Solution

The fourth proportional to 303,495.60, 455,243.40 and 197,207.40 is: 295,811.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,495.60 : 455,243.40 = 197,207.40 : x
  2. Step 2: Convert to fraction form
    303,495.60/455,243.40 = 197,207.40/x
  3. Step 3: Cross multiply
    303,495.60x = 455,243.40 × 197,207.40
  4. Step 4: Simplify right side
    303,495.60x = 89,777,367,281.16
  5. Step 5: Solve for x
    x = 89,777,367,281.16/303,495.60
  6. Step 6: Final answer
    x = 295,811.10

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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.