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Finding the Fourth Proportional to 290,158.59, 400,436.63 and 162,834.20

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Solution

The fourth proportional to 290,158.59, 400,436.63 and 162,834.20 is: 224,721.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,158.59 : 400,436.63 = 162,834.20 : x
  2. Step 2: Convert to fraction form
    290,158.59/400,436.63 = 162,834.20/x
  3. Step 3: Cross multiply
    290,158.59x = 400,436.63 × 162,834.20
  4. Step 4: Simplify right side
    290,158.59x = 65,204,775,480.39
  5. Step 5: Solve for x
    x = 65,204,775,480.39/290,158.59
  6. Step 6: Final answer
    x = 224,721.16

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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.