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Finding the Fourth Proportional to 660,336.70, 990,505.05 and 161,700.70

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Solution

The fourth proportional to 660,336.70, 990,505.05 and 161,700.70 is: 242,551.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,336.70 : 990,505.05 = 161,700.70 : x
  2. Step 2: Convert to fraction form
    660,336.70/990,505.05 = 161,700.70/x
  3. Step 3: Cross multiply
    660,336.70x = 990,505.05 × 161,700.70
  4. Step 4: Simplify right side
    660,336.70x = 160,165,359,938.54
  5. Step 5: Solve for x
    x = 160,165,359,938.54/660,336.70
  6. Step 6: Final answer
    x = 242,551.05

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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.