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Finding the Fourth Proportional to 455,990.70, 683,822.01 and 156,393.57

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Solution

The fourth proportional to 455,990.70, 683,822.01 and 156,393.57 is: 234,534.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,990.70 : 683,822.01 = 156,393.57 : x
  2. Step 2: Convert to fraction form
    455,990.70/683,822.01 = 156,393.57/x
  3. Step 3: Cross multiply
    455,990.70x = 683,822.01 × 156,393.57
  4. Step 4: Simplify right side
    455,990.70x = 106,945,365,388.48
  5. Step 5: Solve for x
    x = 106,945,365,388.48/455,990.70
  6. Step 6: Final answer
    x = 234,534.09

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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.