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Finding the Fourth Proportional to 455,232.64, 628,220.94 and 251,283.51

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Solution

The fourth proportional to 455,232.64, 628,220.94 and 251,283.51 is: 346,771.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,232.64 : 628,220.94 = 251,283.51 : x
  2. Step 2: Convert to fraction form
    455,232.64/628,220.94 = 251,283.51/x
  3. Step 3: Cross multiply
    455,232.64x = 628,220.94 × 251,283.51
  4. Step 4: Simplify right side
    455,232.64x = 157,861,559,717.60
  5. Step 5: Solve for x
    x = 157,861,559,717.60/455,232.64
  6. Step 6: Final answer
    x = 346,771.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.