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Finding the Fourth Proportional to 321,454.55, 443,606.55 and 178,210.91

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Solution

The fourth proportional to 321,454.55, 443,606.55 and 178,210.91 is: 245,930.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,454.55 : 443,606.55 = 178,210.91 : x
  2. Step 2: Convert to fraction form
    321,454.55/443,606.55 = 178,210.91/x
  3. Step 3: Cross multiply
    321,454.55x = 443,606.55 × 178,210.91
  4. Step 4: Simplify right side
    321,454.55x = 79,055,526,957.46
  5. Step 5: Solve for x
    x = 79,055,526,957.46/321,454.55
  6. Step 6: Final answer
    x = 245,930.65

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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.