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Finding the Fourth Proportional to 547,906.40, 821,470.80 and 210,816.80

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Solution

The fourth proportional to 547,906.40, 821,470.80 and 210,816.80 is: 316,075.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,906.40 : 821,470.80 = 210,816.80 : x
  2. Step 2: Convert to fraction form
    547,906.40/821,470.80 = 210,816.80/x
  3. Step 3: Cross multiply
    547,906.40x = 821,470.80 × 210,816.80
  4. Step 4: Simplify right side
    547,906.40x = 173,179,845,349.44
  5. Step 5: Solve for x
    x = 173,179,845,349.44/547,906.40
  6. Step 6: Final answer
    x = 316,075.60

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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.