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Finding the Fourth Proportional to 455,280.63, 628,270.80 and 251,327.17

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Solution

The fourth proportional to 455,280.63, 628,270.80 and 251,327.17 is: 346,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,280.63 : 628,270.80 = 251,327.17 : x
  2. Step 2: Convert to fraction form
    455,280.63/628,270.80 = 251,327.17/x
  3. Step 3: Cross multiply
    455,280.63x = 628,270.80 × 251,327.17
  4. Step 4: Simplify right side
    455,280.63x = 157,901,522,157.64
  5. Step 5: Solve for x
    x = 157,901,522,157.64/455,280.63
  6. Step 6: Final answer
    x = 346,822.40

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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.