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Finding the Fourth Proportional to 288,620.61, 398,314.13 and 161,306.37

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Solution

The fourth proportional to 288,620.61, 398,314.13 and 161,306.37 is: 222,612.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,620.61 : 398,314.13 = 161,306.37 : x
  2. Step 2: Convert to fraction form
    288,620.61/398,314.13 = 161,306.37/x
  3. Step 3: Cross multiply
    288,620.61x = 398,314.13 × 161,306.37
  4. Step 4: Simplify right side
    288,620.61x = 64,250,605,623.48
  5. Step 5: Solve for x
    x = 64,250,605,623.48/288,620.61
  6. Step 6: Final answer
    x = 222,612.67

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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.