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Finding the Fourth Proportional to 290,219.14, 400,480.44 and 162,870.12

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Solution

The fourth proportional to 290,219.14, 400,480.44 and 162,870.12 is: 224,748.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,219.14 : 400,480.44 = 162,870.12 : x
  2. Step 2: Convert to fraction form
    290,219.14/400,480.44 = 162,870.12/x
  3. Step 3: Cross multiply
    290,219.14x = 400,480.44 × 162,870.12
  4. Step 4: Simplify right side
    290,219.14x = 65,226,297,320.45
  5. Step 5: Solve for x
    x = 65,226,297,320.45/290,219.14
  6. Step 6: Final answer
    x = 224,748.43

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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.