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Finding the Fourth Proportional to 461,338.21, 636,908.30 and 300,112.57

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Solution

The fourth proportional to 461,338.21, 636,908.30 and 300,112.57 is: 414,325.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,338.21 : 636,908.30 = 300,112.57 : x
  2. Step 2: Convert to fraction form
    461,338.21/636,908.30 = 300,112.57/x
  3. Step 3: Cross multiply
    461,338.21x = 636,908.30 × 300,112.57
  4. Step 4: Simplify right side
    461,338.21x = 191,144,186,767.33
  5. Step 5: Solve for x
    x = 191,144,186,767.33/461,338.21
  6. Step 6: Final answer
    x = 414,325.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.