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Finding the Fourth Proportional to 321,316.94, 443,316.05 and 185,332.65

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Solution

The fourth proportional to 321,316.94, 443,316.05 and 185,332.65 is: 255,700.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,316.94 : 443,316.05 = 185,332.65 : x
  2. Step 2: Convert to fraction form
    321,316.94/443,316.05 = 185,332.65/x
  3. Step 3: Cross multiply
    321,316.94x = 443,316.05 × 185,332.65
  4. Step 4: Simplify right side
    321,316.94x = 82,160,938,334.03
  5. Step 5: Solve for x
    x = 82,160,938,334.03/321,316.94
  6. Step 6: Final answer
    x = 255,700.62

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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.