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Finding the Fourth Proportional to 551,383.25, 760,926.02 and 309,671.06

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Solution

The fourth proportional to 551,383.25, 760,926.02 and 309,671.06 is: 427,355.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,383.25 : 760,926.02 = 309,671.06 : x
  2. Step 2: Convert to fraction form
    551,383.25/760,926.02 = 309,671.06/x
  3. Step 3: Cross multiply
    551,383.25x = 760,926.02 × 309,671.06
  4. Step 4: Simplify right side
    551,383.25x = 235,636,761,842.00
  5. Step 5: Solve for x
    x = 235,636,761,842.00/551,383.25
  6. Step 6: Final answer
    x = 427,355.68

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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.