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Finding the Fourth Proportional to 455,281.48, 628,271.97 and 251,328.02

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Solution

The fourth proportional to 455,281.48, 628,271.97 and 251,328.02 is: 346,823.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,281.48 : 628,271.97 = 251,328.02 : x
  2. Step 2: Convert to fraction form
    455,281.48/628,271.97 = 251,328.02/x
  3. Step 3: Cross multiply
    455,281.48x = 628,271.97 × 251,328.02
  4. Step 4: Simplify right side
    455,281.48x = 157,902,347,414.28
  5. Step 5: Solve for x
    x = 157,902,347,414.28/455,281.48
  6. Step 6: Final answer
    x = 346,823.57

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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.