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Finding the Fourth Proportional to 660,368.70, 990,553.05 and 161,732.70

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Solution

The fourth proportional to 660,368.70, 990,553.05 and 161,732.70 is: 242,599.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,368.70 : 990,553.05 = 161,732.70 : x
  2. Step 2: Convert to fraction form
    660,368.70/990,553.05 = 161,732.70/x
  3. Step 3: Cross multiply
    660,368.70x = 990,553.05 × 161,732.70
  4. Step 4: Simplify right side
    660,368.70x = 160,204,819,269.74
  5. Step 5: Solve for x
    x = 160,204,819,269.74/660,368.70
  6. Step 6: Final answer
    x = 242,599.05

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Similar ratio
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1.5x scale

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.