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Finding the Fourth Proportional to 551,171.76, 760,626.36 and 306,150

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Solution

The fourth proportional to 551,171.76, 760,626.36 and 306,150 is: 422,492.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,171.76 : 760,626.36 = 306,150 : x
  2. Step 2: Convert to fraction form
    551,171.76/760,626.36 = 306,150/x
  3. Step 3: Cross multiply
    551,171.76x = 760,626.36 × 306,150
  4. Step 4: Simplify right side
    551,171.76x = 232,865,760,114
  5. Step 5: Solve for x
    x = 232,865,760,114/551,171.76
  6. Step 6: Final answer
    x = 422,492.18

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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.