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Finding the Fourth Proportional to 360,138.76, 540,290.15 and 123,467.09

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Solution

The fourth proportional to 360,138.76, 540,290.15 and 123,467.09 is: 185,228.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,138.76 : 540,290.15 = 123,467.09 : x
  2. Step 2: Convert to fraction form
    360,138.76/540,290.15 = 123,467.09/x
  3. Step 3: Cross multiply
    360,138.76x = 540,290.15 × 123,467.09
  4. Step 4: Simplify right side
    360,138.76x = 66,708,049,720.38
  5. Step 5: Solve for x
    x = 66,708,049,720.38/360,138.76
  6. Step 6: Final answer
    x = 185,228.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.