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Finding the Fourth Proportional to 303,527.85, 455,291.78 and 145,675.05

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Solution

The fourth proportional to 303,527.85, 455,291.78 and 145,675.05 is: 218,512.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,527.85 : 455,291.78 = 145,675.05 : x
  2. Step 2: Convert to fraction form
    303,527.85/455,291.78 = 145,675.05/x
  3. Step 3: Cross multiply
    303,527.85x = 455,291.78 × 145,675.05
  4. Step 4: Simplify right side
    303,527.85x = 66,324,652,087.71
  5. Step 5: Solve for x
    x = 66,324,652,087.71/303,527.85
  6. Step 6: Final answer
    x = 218,512.58

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Similar ratio
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1.5x scale

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.