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Finding the Fourth Proportional to 360,396.30, 540,863.73 and 135,978.06

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Solution

The fourth proportional to 360,396.30, 540,863.73 and 135,978.06 is: 204,068.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,396.30 : 540,863.73 = 135,978.06 : x
  2. Step 2: Convert to fraction form
    360,396.30/540,863.73 = 135,978.06/x
  3. Step 3: Cross multiply
    360,396.30x = 540,863.73 × 135,978.06
  4. Step 4: Simplify right side
    360,396.30x = 73,545,600,729.76
  5. Step 5: Solve for x
    x = 73,545,600,729.76/360,396.30
  6. Step 6: Final answer
    x = 204,068.69

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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.