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Finding the Fourth Proportional to 385,910.36, 578,921.58 and 119,692.32

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Solution

The fourth proportional to 385,910.36, 578,921.58 and 119,692.32 is: 179,555.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,910.36 : 578,921.58 = 119,692.32 : x
  2. Step 2: Convert to fraction form
    385,910.36/578,921.58 = 119,692.32/x
  3. Step 3: Cross multiply
    385,910.36x = 578,921.58 × 119,692.32
  4. Step 4: Simplify right side
    385,910.36x = 69,292,464,837.31
  5. Step 5: Solve for x
    x = 69,292,464,837.31/385,910.36
  6. Step 6: Final answer
    x = 179,555.86

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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.