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Finding the Fourth Proportional to 288,571.77, 398,228.21 and 161,247.47

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Solution

The fourth proportional to 288,571.77, 398,228.21 and 161,247.47 is: 222,521.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,571.77 : 398,228.21 = 161,247.47 : x
  2. Step 2: Convert to fraction form
    288,571.77/398,228.21 = 161,247.47/x
  3. Step 3: Cross multiply
    288,571.77x = 398,228.21 × 161,247.47
  4. Step 4: Simplify right side
    288,571.77x = 64,213,288,547.75
  5. Step 5: Solve for x
    x = 64,213,288,547.75/288,571.77
  6. Step 6: Final answer
    x = 222,521.03

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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.