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Finding the Fourth Proportional to 455,982.60, 684,008.30 and 136,109.22

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Solution

The fourth proportional to 455,982.60, 684,008.30 and 136,109.22 is: 204,174.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,982.60 : 684,008.30 = 136,109.22 : x
  2. Step 2: Convert to fraction form
    455,982.60/684,008.30 = 136,109.22/x
  3. Step 3: Cross multiply
    455,982.60x = 684,008.30 × 136,109.22
  4. Step 4: Simplify right side
    455,982.60x = 93,099,836,186.53
  5. Step 5: Solve for x
    x = 93,099,836,186.53/455,982.60
  6. Step 6: Final answer
    x = 204,174.10

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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.