Home / 386,721.60-579,621.60-162,081.60

Finding the Fourth Proportional to 386,721.60, 579,621.60 and 162,081.60

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Solution

The fourth proportional to 386,721.60, 579,621.60 and 162,081.60 is: 242,929.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,721.60 : 579,621.60 = 162,081.60 : x
  2. Step 2: Convert to fraction form
    386,721.60/579,621.60 = 162,081.60/x
  3. Step 3: Cross multiply
    386,721.60x = 579,621.60 × 162,081.60
  4. Step 4: Simplify right side
    386,721.60x = 93,945,996,322.56
  5. Step 5: Solve for x
    x = 93,945,996,322.56/386,721.60
  6. Step 6: Final answer
    x = 242,929.27

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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.