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Finding the Fourth Proportional to 464,444.76, 640,340.39 and 300,812.21

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Solution

The fourth proportional to 464,444.76, 640,340.39 and 300,812.21 is: 414,736.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,444.76 : 640,340.39 = 300,812.21 : x
  2. Step 2: Convert to fraction form
    464,444.76/640,340.39 = 300,812.21/x
  3. Step 3: Cross multiply
    464,444.76x = 640,340.39 × 300,812.21
  4. Step 4: Simplify right side
    464,444.76x = 192,622,205,418.49
  5. Step 5: Solve for x
    x = 192,622,205,418.49/464,444.76
  6. Step 6: Final answer
    x = 414,736.52

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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.