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Finding the Fourth Proportional to 647,499.70, 971,249.55 and 204,210.10

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Solution

The fourth proportional to 647,499.70, 971,249.55 and 204,210.10 is: 306,315.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,499.70 : 971,249.55 = 204,210.10 : x
  2. Step 2: Convert to fraction form
    647,499.70/971,249.55 = 204,210.10/x
  3. Step 3: Cross multiply
    647,499.70x = 971,249.55 × 204,210.10
  4. Step 4: Simplify right side
    647,499.70x = 198,338,967,730.46
  5. Step 5: Solve for x
    x = 198,338,967,730.46/647,499.70
  6. Step 6: Final answer
    x = 306,315.15

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Double scale
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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.