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Finding the Fourth Proportional to 631,204.60, 946,811.70 and 210,479.80

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Solution

The fourth proportional to 631,204.60, 946,811.70 and 210,479.80 is: 315,721.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,204.60 : 946,811.70 = 210,479.80 : x
  2. Step 2: Convert to fraction form
    631,204.60/946,811.70 = 210,479.80/x
  3. Step 3: Cross multiply
    631,204.60x = 946,811.70 × 210,479.80
  4. Step 4: Simplify right side
    631,204.60x = 199,284,737,253.66
  5. Step 5: Solve for x
    x = 199,284,737,253.66/631,204.60
  6. Step 6: Final answer
    x = 315,721.30

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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.