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Finding the Fourth Proportional to 455,280.79, 628,271.02 and 251,327.33

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Solution

The fourth proportional to 455,280.79, 628,271.02 and 251,327.33 is: 346,822.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,280.79 : 628,271.02 = 251,327.33 : x
  2. Step 2: Convert to fraction form
    455,280.79/628,271.02 = 251,327.33/x
  3. Step 3: Cross multiply
    455,280.79x = 628,271.02 × 251,327.33
  4. Step 4: Simplify right side
    455,280.79x = 157,901,676,559.32
  5. Step 5: Solve for x
    x = 157,901,676,559.32/455,280.79
  6. Step 6: Final answer
    x = 346,822.62

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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.