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Finding the Fourth Proportional to 455,402.16, 628,476 and 251,481.84

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Solution

The fourth proportional to 455,402.16, 628,476 and 251,481.84 is: 347,056.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,402.16 : 628,476 = 251,481.84 : x
  2. Step 2: Convert to fraction form
    455,402.16/628,476 = 251,481.84/x
  3. Step 3: Cross multiply
    455,402.16x = 628,476 × 251,481.84
  4. Step 4: Simplify right side
    455,402.16x = 158,050,300,875.84
  5. Step 5: Solve for x
    x = 158,050,300,875.84/455,402.16
  6. Step 6: Final answer
    x = 347,056.55

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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.