Home / 401,081.39-553,439.70-239,877.62

Finding the Fourth Proportional to 401,081.39, 553,439.70 and 239,877.62

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Solution

The fourth proportional to 401,081.39, 553,439.70 and 239,877.62 is: 330,999.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,081.39 : 553,439.70 = 239,877.62 : x
  2. Step 2: Convert to fraction form
    401,081.39/553,439.70 = 239,877.62/x
  3. Step 3: Cross multiply
    401,081.39x = 553,439.70 × 239,877.62
  4. Step 4: Simplify right side
    401,081.39x = 132,757,798,049.51
  5. Step 5: Solve for x
    x = 132,757,798,049.51/401,081.39
  6. Step 6: Final answer
    x = 330,999.65

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1.5x scale

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.