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Finding the Fourth Proportional to 281,919.29, 389,048.67 and 154,597.55

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Solution

The fourth proportional to 281,919.29, 389,048.67 and 154,597.55 is: 213,344.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,919.29 : 389,048.67 = 154,597.55 : x
  2. Step 2: Convert to fraction form
    281,919.29/389,048.67 = 154,597.55/x
  3. Step 3: Cross multiply
    281,919.29x = 389,048.67 × 154,597.55
  4. Step 4: Simplify right side
    281,919.29x = 60,145,969,267.52
  5. Step 5: Solve for x
    x = 60,145,969,267.52/281,919.29
  6. Step 6: Final answer
    x = 213,344.64

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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.