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Finding the Fourth Proportional to 631,163.52, 946,540.80 and 210,326.40

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Solution

The fourth proportional to 631,163.52, 946,540.80 and 210,326.40 is: 315,421.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,163.52 : 946,540.80 = 210,326.40 : x
  2. Step 2: Convert to fraction form
    631,163.52/946,540.80 = 210,326.40/x
  3. Step 3: Cross multiply
    631,163.52x = 946,540.80 × 210,326.40
  4. Step 4: Simplify right side
    631,163.52x = 199,082,518,917.12
  5. Step 5: Solve for x
    x = 199,082,518,917.12/631,163.52
  6. Step 6: Final answer
    x = 315,421.46

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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.