Home / 305,370.69-457,758.18-145,403.64

Finding the Fourth Proportional to 305,370.69, 457,758.18 and 145,403.64

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Solution

The fourth proportional to 305,370.69, 457,758.18 and 145,403.64 is: 217,963.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,370.69 : 457,758.18 = 145,403.64 : x
  2. Step 2: Convert to fraction form
    305,370.69/457,758.18 = 145,403.64/x
  3. Step 3: Cross multiply
    305,370.69x = 457,758.18 × 145,403.64
  4. Step 4: Simplify right side
    305,370.69x = 66,559,705,611.78
  5. Step 5: Solve for x
    x = 66,559,705,611.78/305,370.69
  6. Step 6: Final answer
    x = 217,963.63

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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.