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Finding the Fourth Proportional to 152,654.40, 228,981.60 and 131,659.20

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Solution

The fourth proportional to 152,654.40, 228,981.60 and 131,659.20 is: 197,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,654.40 : 228,981.60 = 131,659.20 : x
  2. Step 2: Convert to fraction form
    152,654.40/228,981.60 = 131,659.20/x
  3. Step 3: Cross multiply
    152,654.40x = 228,981.60 × 131,659.20
  4. Step 4: Simplify right side
    152,654.40x = 30,147,534,270.72
  5. Step 5: Solve for x
    x = 30,147,534,270.72/152,654.40
  6. Step 6: Final answer
    x = 197,488.80

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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.