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Finding the Fourth Proportional to 485,262.60, 727,981.44 and 165,396.84

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Solution

The fourth proportional to 485,262.60, 727,981.44 and 165,396.84 is: 248,125.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,262.60 : 727,981.44 = 165,396.84 : x
  2. Step 2: Convert to fraction form
    485,262.60/727,981.44 = 165,396.84/x
  3. Step 3: Cross multiply
    485,262.60x = 727,981.44 × 165,396.84
  4. Step 4: Simplify right side
    485,262.60x = 120,405,829,754.65
  5. Step 5: Solve for x
    x = 120,405,829,754.65/485,262.60
  6. Step 6: Final answer
    x = 248,125.10

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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.