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Finding the Fourth Proportional to 660,338.20, 990,507.30 and 161,702.20

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Solution

The fourth proportional to 660,338.20, 990,507.30 and 161,702.20 is: 242,553.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,338.20 : 990,507.30 = 161,702.20 : x
  2. Step 2: Convert to fraction form
    660,338.20/990,507.30 = 161,702.20/x
  3. Step 3: Cross multiply
    660,338.20x = 990,507.30 × 161,702.20
  4. Step 4: Simplify right side
    660,338.20x = 160,167,209,526.06
  5. Step 5: Solve for x
    x = 160,167,209,526.06/660,338.20
  6. Step 6: Final answer
    x = 242,553.30

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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.