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Finding the Fourth Proportional to 360,210.12, 540,315.20 and 135,620.94

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Solution

The fourth proportional to 360,210.12, 540,315.20 and 135,620.94 is: 203,431.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,210.12 : 540,315.20 = 135,620.94 : x
  2. Step 2: Convert to fraction form
    360,210.12/540,315.20 = 135,620.94/x
  3. Step 3: Cross multiply
    360,210.12x = 540,315.20 × 135,620.94
  4. Step 4: Simplify right side
    360,210.12x = 73,278,054,642.18
  5. Step 5: Solve for x
    x = 73,278,054,642.18/360,210.12
  6. Step 6: Final answer
    x = 203,431.42

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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.