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Finding the Fourth Proportional to 288,639.44, 398,323.00 and 161,315.03

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Solution

The fourth proportional to 288,639.44, 398,323.00 and 161,315.03 is: 222,615.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,639.44 : 398,323.00 = 161,315.03 : x
  2. Step 2: Convert to fraction form
    288,639.44/398,323.00 = 161,315.03/x
  3. Step 3: Cross multiply
    288,639.44x = 398,323.00 × 161,315.03
  4. Step 4: Simplify right side
    288,639.44x = 64,255,484,299.79
  5. Step 5: Solve for x
    x = 64,255,484,299.79/288,639.44
  6. Step 6: Final answer
    x = 222,615.06

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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.