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Finding the Fourth Proportional to 666,100.16, 998,750.07 and 305,820.15

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Solution

The fourth proportional to 666,100.16, 998,750.07 and 305,820.15 is: 458,546.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,100.16 : 998,750.07 = 305,820.15 : x
  2. Step 2: Convert to fraction form
    666,100.16/998,750.07 = 305,820.15/x
  3. Step 3: Cross multiply
    666,100.16x = 998,750.07 × 305,820.15
  4. Step 4: Simplify right side
    666,100.16x = 305,437,896,219.91
  5. Step 5: Solve for x
    x = 305,437,896,219.91/666,100.16
  6. Step 6: Final answer
    x = 458,546.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.