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Finding the Fourth Proportional to 254,495.70, 381,743.55 and 140,334.30

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Solution

The fourth proportional to 254,495.70, 381,743.55 and 140,334.30 is: 210,501.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,495.70 : 381,743.55 = 140,334.30 : x
  2. Step 2: Convert to fraction form
    254,495.70/381,743.55 = 140,334.30/x
  3. Step 3: Cross multiply
    254,495.70x = 381,743.55 × 140,334.30
  4. Step 4: Simplify right side
    254,495.70x = 53,571,713,868.77
  5. Step 5: Solve for x
    x = 53,571,713,868.77/254,495.70
  6. Step 6: Final answer
    x = 210,501.45

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Similar ratio
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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.