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Finding the Fourth Proportional to 321,055.51, 443,059.86 and 193,706.50

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Solution

The fourth proportional to 321,055.51, 443,059.86 and 193,706.50 is: 267,316.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,055.51 : 443,059.86 = 193,706.50 : x
  2. Step 2: Convert to fraction form
    321,055.51/443,059.86 = 193,706.50/x
  3. Step 3: Cross multiply
    321,055.51x = 443,059.86 × 193,706.50
  4. Step 4: Simplify right side
    321,055.51x = 85,823,574,771.09
  5. Step 5: Solve for x
    x = 85,823,574,771.09/321,055.51
  6. Step 6: Final answer
    x = 267,316.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.