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Finding the Fourth Proportional to 290,224.45, 400,487.76 and 162,875.44

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Solution

The fourth proportional to 290,224.45, 400,487.76 and 162,875.44 is: 224,755.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,224.45 : 400,487.76 = 162,875.44 : x
  2. Step 2: Convert to fraction form
    290,224.45/400,487.76 = 162,875.44/x
  3. Step 3: Cross multiply
    290,224.45x = 400,487.76 × 162,875.44
  4. Step 4: Simplify right side
    290,224.45x = 65,229,619,123.40
  5. Step 5: Solve for x
    x = 65,229,619,123.40/290,224.45
  6. Step 6: Final answer
    x = 224,755.77

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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.