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Finding the Fourth Proportional to 290,018.76, 400,136.19 and 169,074.44

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Solution

The fourth proportional to 290,018.76, 400,136.19 and 169,074.44 is: 233,270.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,018.76 : 400,136.19 = 169,074.44 : x
  2. Step 2: Convert to fraction form
    290,018.76/400,136.19 = 169,074.44/x
  3. Step 3: Cross multiply
    290,018.76x = 400,136.19 × 169,074.44
  4. Step 4: Simplify right side
    290,018.76x = 67,652,802,247.98
  5. Step 5: Solve for x
    x = 67,652,802,247.98/290,018.76
  6. Step 6: Final answer
    x = 233,270.43

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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.