Home / 385,867.18-578,822.64-119,665.54

Finding the Fourth Proportional to 385,867.18, 578,822.64 and 119,665.54

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Solution

The fourth proportional to 385,867.18, 578,822.64 and 119,665.54 is: 179,505.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,867.18 : 578,822.64 = 119,665.54 : x
  2. Step 2: Convert to fraction form
    385,867.18/578,822.64 = 119,665.54/x
  3. Step 3: Cross multiply
    385,867.18x = 578,822.64 × 119,665.54
  4. Step 4: Simplify right side
    385,867.18x = 69,265,123,779.83
  5. Step 5: Solve for x
    x = 69,265,123,779.83/385,867.18
  6. Step 6: Final answer
    x = 179,505.09

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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.