Home / 276,290.64-381,217.20-163,130.40

Finding the Fourth Proportional to 276,290.64, 381,217.20 and 163,130.40

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Solution

The fourth proportional to 276,290.64, 381,217.20 and 163,130.40 is: 225,082.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,290.64 : 381,217.20 = 163,130.40 : x
  2. Step 2: Convert to fraction form
    276,290.64/381,217.20 = 163,130.40/x
  3. Step 3: Cross multiply
    276,290.64x = 381,217.20 × 163,130.40
  4. Step 4: Simplify right side
    276,290.64x = 62,188,114,322.88
  5. Step 5: Solve for x
    x = 62,188,114,322.88/276,290.64
  6. Step 6: Final answer
    x = 225,082.23

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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.