Home / 385,862.11-578,815.03-119,660.47

Finding the Fourth Proportional to 385,862.11, 578,815.03 and 119,660.47

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Solution

The fourth proportional to 385,862.11, 578,815.03 and 119,660.47 is: 179,497.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,862.11 : 578,815.03 = 119,660.47 : x
  2. Step 2: Convert to fraction form
    385,862.11/578,815.03 = 119,660.47/x
  3. Step 3: Cross multiply
    385,862.11x = 578,815.03 × 119,660.47
  4. Step 4: Simplify right side
    385,862.11x = 69,261,278,532.86
  5. Step 5: Solve for x
    x = 69,261,278,532.86/385,862.11
  6. Step 6: Final answer
    x = 179,497.49

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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.