Home / 421,016.47-631,566.83-121,504.39

Finding the Fourth Proportional to 421,016.47, 631,566.83 and 121,504.39

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Solution

The fourth proportional to 421,016.47, 631,566.83 and 121,504.39 is: 182,268.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,016.47 : 631,566.83 = 121,504.39 : x
  2. Step 2: Convert to fraction form
    421,016.47/631,566.83 = 121,504.39/x
  3. Step 3: Cross multiply
    421,016.47x = 631,566.83 × 121,504.39
  4. Step 4: Simplify right side
    421,016.47x = 76,738,142,423.38
  5. Step 5: Solve for x
    x = 76,738,142,423.38/421,016.47
  6. Step 6: Final answer
    x = 182,268.74

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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.