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Finding the Fourth Proportional to 660,377.40, 990,566.10 and 161,741.40

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Solution

The fourth proportional to 660,377.40, 990,566.10 and 161,741.40 is: 242,612.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,377.40 : 990,566.10 = 161,741.40 : x
  2. Step 2: Convert to fraction form
    660,377.40/990,566.10 = 161,741.40/x
  3. Step 3: Cross multiply
    660,377.40x = 990,566.10 × 161,741.40
  4. Step 4: Simplify right side
    660,377.40x = 160,215,547,806.54
  5. Step 5: Solve for x
    x = 160,215,547,806.54/660,377.40
  6. Step 6: Final answer
    x = 242,612.10

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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.