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Finding the Fourth Proportional to 548,139.72, 821,605.86 and 358,521.96

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Solution

The fourth proportional to 548,139.72, 821,605.86 and 358,521.96 is: 537,388.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,139.72 : 821,605.86 = 358,521.96 : x
  2. Step 2: Convert to fraction form
    548,139.72/821,605.86 = 358,521.96/x
  3. Step 3: Cross multiply
    548,139.72x = 821,605.86 × 358,521.96
  4. Step 4: Simplify right side
    548,139.72x = 294,563,743,274.69
  5. Step 5: Solve for x
    x = 294,563,743,274.69/548,139.72
  6. Step 6: Final answer
    x = 537,388.06

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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.