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Finding the Fourth Proportional to 311,898.40, 467,617.20 and 124,813.60

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Solution

The fourth proportional to 311,898.40, 467,617.20 and 124,813.60 is: 187,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,898.40 : 467,617.20 = 124,813.60 : x
  2. Step 2: Convert to fraction form
    311,898.40/467,617.20 = 124,813.60/x
  3. Step 3: Cross multiply
    311,898.40x = 467,617.20 × 124,813.60
  4. Step 4: Simplify right side
    311,898.40x = 58,364,986,153.92
  5. Step 5: Solve for x
    x = 58,364,986,153.92/311,898.40
  6. Step 6: Final answer
    x = 187,128.20

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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.