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Finding the Fourth Proportional to 340,936.60, 511,404.90 and 311,445.40

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Solution

The fourth proportional to 340,936.60, 511,404.90 and 311,445.40 is: 467,168.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,936.60 : 511,404.90 = 311,445.40 : x
  2. Step 2: Convert to fraction form
    340,936.60/511,404.90 = 311,445.40/x
  3. Step 3: Cross multiply
    340,936.60x = 511,404.90 × 311,445.40
  4. Step 4: Simplify right side
    340,936.60x = 159,274,703,642.46
  5. Step 5: Solve for x
    x = 159,274,703,642.46/340,936.60
  6. Step 6: Final answer
    x = 467,168.10

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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.