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Finding the Fourth Proportional to 543,465.41, 815,301.66 and 219,279.22

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Solution

The fourth proportional to 543,465.41, 815,301.66 and 219,279.22 is: 328,960.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,465.41 : 815,301.66 = 219,279.22 : x
  2. Step 2: Convert to fraction form
    543,465.41/815,301.66 = 219,279.22/x
  3. Step 3: Cross multiply
    543,465.41x = 815,301.66 × 219,279.22
  4. Step 4: Simplify right side
    543,465.41x = 178,778,711,521.31
  5. Step 5: Solve for x
    x = 178,778,711,521.31/543,465.41
  6. Step 6: Final answer
    x = 328,960.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.