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Finding the Fourth Proportional to 290,288.61, 400,576.17 and 162,939.60

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Solution

The fourth proportional to 290,288.61, 400,576.17 and 162,939.60 is: 224,844.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,288.61 : 400,576.17 = 162,939.60 : x
  2. Step 2: Convert to fraction form
    290,288.61/400,576.17 = 162,939.60/x
  3. Step 3: Cross multiply
    290,288.61x = 400,576.17 × 162,939.60
  4. Step 4: Simplify right side
    290,288.61x = 65,269,720,094.63
  5. Step 5: Solve for x
    x = 65,269,720,094.63/290,288.61
  6. Step 6: Final answer
    x = 224,844.23

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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.