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Finding the Fourth Proportional to 368,989.18, 553,658.73 and 219,524.74

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Solution

The fourth proportional to 368,989.18, 553,658.73 and 219,524.74 is: 329,391.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,989.18 : 553,658.73 = 219,524.74 : x
  2. Step 2: Convert to fraction form
    368,989.18/553,658.73 = 219,524.74/x
  3. Step 3: Cross multiply
    368,989.18x = 553,658.73 × 219,524.74
  4. Step 4: Simplify right side
    368,989.18x = 121,541,788,751.98
  5. Step 5: Solve for x
    x = 121,541,788,751.98/368,989.18
  6. Step 6: Final answer
    x = 329,391.20

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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.