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Finding the Fourth Proportional to 321,088.40, 443,109.18 and 183,264.56

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Solution

The fourth proportional to 321,088.40, 443,109.18 and 183,264.56 is: 252,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,088.40 : 443,109.18 = 183,264.56 : x
  2. Step 2: Convert to fraction form
    321,088.40/443,109.18 = 183,264.56/x
  3. Step 3: Cross multiply
    321,088.40x = 443,109.18 × 183,264.56
  4. Step 4: Simplify right side
    321,088.40x = 81,206,208,904.66
  5. Step 5: Solve for x
    x = 81,206,208,904.66/321,088.40
  6. Step 6: Final answer
    x = 252,909.20

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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.