Home / 290,397.76-400,719.04-163,072.32

Finding the Fourth Proportional to 290,397.76, 400,719.04 and 163,072.32

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Solution

The fourth proportional to 290,397.76, 400,719.04 and 163,072.32 is: 225,023.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,397.76 : 400,719.04 = 163,072.32 : x
  2. Step 2: Convert to fraction form
    290,397.76/400,719.04 = 163,072.32/x
  3. Step 3: Cross multiply
    290,397.76x = 400,719.04 × 163,072.32
  4. Step 4: Simplify right side
    290,397.76x = 65,346,183,520.97
  5. Step 5: Solve for x
    x = 65,346,183,520.97/290,397.76
  6. Step 6: Final answer
    x = 225,023.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.