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Finding the Fourth Proportional to 290,143.73, 400,427.12 and 162,819.83

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Solution

The fourth proportional to 290,143.73, 400,427.12 and 162,819.83 is: 224,707.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,143.73 : 400,427.12 = 162,819.83 : x
  2. Step 2: Convert to fraction form
    290,143.73/400,427.12 = 162,819.83/x
  3. Step 3: Cross multiply
    290,143.73x = 400,427.12 × 162,819.83
  4. Step 4: Simplify right side
    290,143.73x = 65,197,475,792.76
  5. Step 5: Solve for x
    x = 65,197,475,792.76/290,143.73
  6. Step 6: Final answer
    x = 224,707.51

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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.