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Finding the Fourth Proportional to 288,674.60, 398,354.76 and 159,605.55

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Solution

The fourth proportional to 288,674.60, 398,354.76 and 159,605.55 is: 220,246.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,674.60 : 398,354.76 = 159,605.55 : x
  2. Step 2: Convert to fraction form
    288,674.60/398,354.76 = 159,605.55/x
  3. Step 3: Cross multiply
    288,674.60x = 398,354.76 × 159,605.55
  4. Step 4: Simplify right side
    288,674.60x = 63,579,630,564.92
  5. Step 5: Solve for x
    x = 63,579,630,564.92/288,674.60
  6. Step 6: Final answer
    x = 220,246.71

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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.