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Finding the Fourth Proportional to 311,208.40, 466,812.60 and 306,542.80

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Solution

The fourth proportional to 311,208.40, 466,812.60 and 306,542.80 is: 459,814.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,208.40 : 466,812.60 = 306,542.80 : x
  2. Step 2: Convert to fraction form
    311,208.40/466,812.60 = 306,542.80/x
  3. Step 3: Cross multiply
    311,208.40x = 466,812.60 × 306,542.80
  4. Step 4: Simplify right side
    311,208.40x = 143,098,041,479.28
  5. Step 5: Solve for x
    x = 143,098,041,479.28/311,208.40
  6. Step 6: Final answer
    x = 459,814.20

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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.