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Finding the Fourth Proportional to 660,444.98, 990,183.29 and 210,906.72

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Solution

The fourth proportional to 660,444.98, 990,183.29 and 210,906.72 is: 316,205.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,444.98 : 990,183.29 = 210,906.72 : x
  2. Step 2: Convert to fraction form
    660,444.98/990,183.29 = 210,906.72/x
  3. Step 3: Cross multiply
    660,444.98x = 990,183.29 × 210,906.72
  4. Step 4: Simplify right side
    660,444.98x = 208,836,308,838.18
  5. Step 5: Solve for x
    x = 208,836,308,838.18/660,444.98
  6. Step 6: Final answer
    x = 316,205.46

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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.