Home / 631,743.95-947,665.61-211,021.31

Finding the Fourth Proportional to 631,743.95, 947,665.61 and 211,021.31

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Solution

The fourth proportional to 631,743.95, 947,665.61 and 211,021.31 is: 316,548.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,743.95 : 947,665.61 = 211,021.31 : x
  2. Step 2: Convert to fraction form
    631,743.95/947,665.61 = 211,021.31/x
  3. Step 3: Cross multiply
    631,743.95x = 947,665.61 × 211,021.31
  4. Step 4: Simplify right side
    631,743.95x = 199,977,638,464.15
  5. Step 5: Solve for x
    x = 199,977,638,464.15/631,743.95
  6. Step 6: Final answer
    x = 316,548.56

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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.