Home / 385,972.38-578,965.86-119,741.58

Finding the Fourth Proportional to 385,972.38, 578,965.86 and 119,741.58

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Solution

The fourth proportional to 385,972.38, 578,965.86 and 119,741.58 is: 179,614.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,972.38 : 578,965.86 = 119,741.58 : x
  2. Step 2: Convert to fraction form
    385,972.38/578,965.86 = 119,741.58/x
  3. Step 3: Cross multiply
    385,972.38x = 578,965.86 × 119,741.58
  4. Step 4: Simplify right side
    385,972.38x = 69,326,286,842.46
  5. Step 5: Solve for x
    x = 69,326,286,842.46/385,972.38
  6. Step 6: Final answer
    x = 179,614.63

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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.