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Finding the Fourth Proportional to 288,709.66, 398,384.58 and 159,630.58

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Solution

The fourth proportional to 288,709.66, 398,384.58 and 159,630.58 is: 220,270.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,709.66 : 398,384.58 = 159,630.58 : x
  2. Step 2: Convert to fraction form
    288,709.66/398,384.58 = 159,630.58/x
  3. Step 3: Cross multiply
    288,709.66x = 398,384.58 × 159,630.58
  4. Step 4: Simplify right side
    288,709.66x = 63,594,361,568.46
  5. Step 5: Solve for x
    x = 63,594,361,568.46/288,709.66
  6. Step 6: Final answer
    x = 220,270.99

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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.