Home / 631,404.92-947,115.60-210,680.80

Finding the Fourth Proportional to 631,404.92, 947,115.60 and 210,680.80

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Solution

The fourth proportional to 631,404.92, 947,115.60 and 210,680.80 is: 316,023.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,404.92 : 947,115.60 = 210,680.80 : x
  2. Step 2: Convert to fraction form
    631,404.92/947,115.60 = 210,680.80/x
  3. Step 3: Cross multiply
    631,404.92x = 947,115.60 × 210,680.80
  4. Step 4: Simplify right side
    631,404.92x = 199,539,069,932.69
  5. Step 5: Solve for x
    x = 199,539,069,932.69/631,404.92
  6. Step 6: Final answer
    x = 316,023.94

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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.