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Finding the Fourth Proportional to 316,868.40, 475,302.60 and 303,217.20

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Solution

The fourth proportional to 316,868.40, 475,302.60 and 303,217.20 is: 454,825.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,868.40 : 475,302.60 = 303,217.20 : x
  2. Step 2: Convert to fraction form
    316,868.40/475,302.60 = 303,217.20/x
  3. Step 3: Cross multiply
    316,868.40x = 475,302.60 × 303,217.20
  4. Step 4: Simplify right side
    316,868.40x = 144,119,923,524.72
  5. Step 5: Solve for x
    x = 144,119,923,524.72/316,868.40
  6. Step 6: Final answer
    x = 454,825.80

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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.