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Finding the Fourth Proportional to 311,954.80, 468,047.40 and 300,434.80

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Solution

The fourth proportional to 311,954.80, 468,047.40 and 300,434.80 is: 450,763.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,954.80 : 468,047.40 = 300,434.80 : x
  2. Step 2: Convert to fraction form
    311,954.80/468,047.40 = 300,434.80/x
  3. Step 3: Cross multiply
    311,954.80x = 468,047.40 × 300,434.80
  4. Step 4: Simplify right side
    311,954.80x = 140,617,727,009.52
  5. Step 5: Solve for x
    x = 140,617,727,009.52/311,954.80
  6. Step 6: Final answer
    x = 450,763.15

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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.