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Finding the Fourth Proportional to 370,880.45, 511,880.55 and 217,918.61

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Solution

The fourth proportional to 370,880.45, 511,880.55 and 217,918.61 is: 300,766.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,880.45 : 511,880.55 = 217,918.61 : x
  2. Step 2: Convert to fraction form
    370,880.45/511,880.55 = 217,918.61/x
  3. Step 3: Cross multiply
    370,880.45x = 511,880.55 × 217,918.61
  4. Step 4: Simplify right side
    370,880.45x = 111,548,299,221.74
  5. Step 5: Solve for x
    x = 111,548,299,221.74/370,880.45
  6. Step 6: Final answer
    x = 300,766.19

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1.5x scale

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.