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Finding the Fourth Proportional to 547,290.99, 820,964.15 and 210,213.45

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Solution

The fourth proportional to 547,290.99, 820,964.15 and 210,213.45 is: 315,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,290.99 : 820,964.15 = 210,213.45 : x
  2. Step 2: Convert to fraction form
    547,290.99/820,964.15 = 210,213.45/x
  3. Step 3: Cross multiply
    547,290.99x = 820,964.15 × 210,213.45
  4. Step 4: Simplify right side
    547,290.99x = 172,577,706,297.82
  5. Step 5: Solve for x
    x = 172,577,706,297.82/547,290.99
  6. Step 6: Final answer
    x = 315,330.80

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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.