Home / 385,619.70-578,429.55-225,531.30

Finding the Fourth Proportional to 385,619.70, 578,429.55 and 225,531.30

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Solution

The fourth proportional to 385,619.70, 578,429.55 and 225,531.30 is: 338,296.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,619.70 : 578,429.55 = 225,531.30 : x
  2. Step 2: Convert to fraction form
    385,619.70/578,429.55 = 225,531.30/x
  3. Step 3: Cross multiply
    385,619.70x = 578,429.55 × 225,531.30
  4. Step 4: Simplify right side
    385,619.70x = 130,453,968,369.92
  5. Step 5: Solve for x
    x = 130,453,968,369.92/385,619.70
  6. Step 6: Final answer
    x = 338,296.95

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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.