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Finding the Fourth Proportional to 321,417.09, 443,525.70 and 178,164.93

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Solution

The fourth proportional to 321,417.09, 443,525.70 and 178,164.93 is: 245,851.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,417.09 : 443,525.70 = 178,164.93 : x
  2. Step 2: Convert to fraction form
    321,417.09/443,525.70 = 178,164.93/x
  3. Step 3: Cross multiply
    321,417.09x = 443,525.70 × 178,164.93
  4. Step 4: Simplify right side
    321,417.09x = 79,020,725,293.70
  5. Step 5: Solve for x
    x = 79,020,725,293.70/321,417.09
  6. Step 6: Final answer
    x = 245,851.04

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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.