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Finding the Fourth Proportional to 630,643.71, 945,403.05 and 231,191.22

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Solution

The fourth proportional to 630,643.71, 945,403.05 and 231,191.22 is: 346,580.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,643.71 : 945,403.05 = 231,191.22 : x
  2. Step 2: Convert to fraction form
    630,643.71/945,403.05 = 231,191.22/x
  3. Step 3: Cross multiply
    630,643.71x = 945,403.05 × 231,191.22
  4. Step 4: Simplify right side
    630,643.71x = 218,568,884,521.22
  5. Step 5: Solve for x
    x = 218,568,884,521.22/630,643.71
  6. Step 6: Final answer
    x = 346,580.61

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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.