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Finding the Fourth Proportional to 455,398.16, 628,470.48 and 251,477.84

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Solution

The fourth proportional to 455,398.16, 628,470.48 and 251,477.84 is: 347,051.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,398.16 : 628,470.48 = 251,477.84 : x
  2. Step 2: Convert to fraction form
    455,398.16/628,470.48 = 251,477.84/x
  3. Step 3: Cross multiply
    455,398.16x = 628,470.48 × 251,477.84
  4. Step 4: Simplify right side
    455,398.16x = 158,046,398,814.16
  5. Step 5: Solve for x
    x = 158,046,398,814.16/455,398.16
  6. Step 6: Final answer
    x = 347,051.03

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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.