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Finding the Fourth Proportional to 631,146.87, 946,728.68 and 210,422.88

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Solution

The fourth proportional to 631,146.87, 946,728.68 and 210,422.88 is: 315,637.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,146.87 : 946,728.68 = 210,422.88 : x
  2. Step 2: Convert to fraction form
    631,146.87/946,728.68 = 210,422.88/x
  3. Step 3: Cross multiply
    631,146.87x = 946,728.68 × 210,422.88
  4. Step 4: Simplify right side
    631,146.87x = 199,213,374,372.08
  5. Step 5: Solve for x
    x = 199,213,374,372.08/631,146.87
  6. Step 6: Final answer
    x = 315,637.11

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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.