Home / 400,923.17-553,273.94-239,778.21

Finding the Fourth Proportional to 400,923.17, 553,273.94 and 239,778.21

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Solution

The fourth proportional to 400,923.17, 553,273.94 and 239,778.21 is: 330,893.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,923.17 : 553,273.94 = 239,778.21 : x
  2. Step 2: Convert to fraction form
    400,923.17/553,273.94 = 239,778.21/x
  3. Step 3: Cross multiply
    400,923.17x = 553,273.94 × 239,778.21
  4. Step 4: Simplify right side
    400,923.17x = 132,663,036,869.03
  5. Step 5: Solve for x
    x = 132,663,036,869.03/400,923.17
  6. Step 6: Final answer
    x = 330,893.91

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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.