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Finding the Fourth Proportional to 228,313.58, 342,678.14 and 121,787.85

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Solution

The fourth proportional to 228,313.58, 342,678.14 and 121,787.85 is: 182,792.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,313.58 : 342,678.14 = 121,787.85 : x
  2. Step 2: Convert to fraction form
    228,313.58/342,678.14 = 121,787.85/x
  3. Step 3: Cross multiply
    228,313.58x = 342,678.14 × 121,787.85
  4. Step 4: Simplify right side
    228,313.58x = 41,734,033,303.66
  5. Step 5: Solve for x
    x = 41,734,033,303.66/228,313.58
  6. Step 6: Final answer
    x = 182,792.60

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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.