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Finding the Fourth Proportional to 254,464.84, 381,802.92 and 128,037.60

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Solution

The fourth proportional to 254,464.84, 381,802.92 and 128,037.60 is: 192,109.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,464.84 : 381,802.92 = 128,037.60 : x
  2. Step 2: Convert to fraction form
    254,464.84/381,802.92 = 128,037.60/x
  3. Step 3: Cross multiply
    254,464.84x = 381,802.92 × 128,037.60
  4. Step 4: Simplify right side
    254,464.84x = 48,885,129,549.79
  5. Step 5: Solve for x
    x = 48,885,129,549.79/254,464.84
  6. Step 6: Final answer
    x = 192,109.56

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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.