Home / 400,908.10-553,253.81-219,616.05

Finding the Fourth Proportional to 400,908.10, 553,253.81 and 219,616.05

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Solution

The fourth proportional to 400,908.10, 553,253.81 and 219,616.05 is: 303,070.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,908.10 : 553,253.81 = 219,616.05 : x
  2. Step 2: Convert to fraction form
    400,908.10/553,253.81 = 219,616.05/x
  3. Step 3: Cross multiply
    400,908.10x = 553,253.81 × 219,616.05
  4. Step 4: Simplify right side
    400,908.10x = 121,503,416,399.65
  5. Step 5: Solve for x
    x = 121,503,416,399.65/400,908.10
  6. Step 6: Final answer
    x = 303,070.50

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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.