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Finding the Fourth Proportional to 368,712.56, 553,123.28 and 188,899.70

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Solution

The fourth proportional to 368,712.56, 553,123.28 and 188,899.70 is: 283,377.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,712.56 : 553,123.28 = 188,899.70 : x
  2. Step 2: Convert to fraction form
    368,712.56/553,123.28 = 188,899.70/x
  3. Step 3: Cross multiply
    368,712.56x = 553,123.28 × 188,899.70
  4. Step 4: Simplify right side
    368,712.56x = 104,484,819,361.65
  5. Step 5: Solve for x
    x = 104,484,819,361.65/368,712.56
  6. Step 6: Final answer
    x = 283,377.44

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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.