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Finding the Fourth Proportional to 455,326.18, 628,346.57 and 251,376.89

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Solution

The fourth proportional to 455,326.18, 628,346.57 and 251,376.89 is: 346,898.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,326.18 : 628,346.57 = 251,376.89 : x
  2. Step 2: Convert to fraction form
    455,326.18/628,346.57 = 251,376.89/x
  3. Step 3: Cross multiply
    455,326.18x = 628,346.57 × 251,376.89
  4. Step 4: Simplify right side
    455,326.18x = 157,951,802,210.15
  5. Step 5: Solve for x
    x = 157,951,802,210.15/455,326.18
  6. Step 6: Final answer
    x = 346,898.14

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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.