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Finding the Fourth Proportional to 464,390.82, 640,266.09 and 300,758.23

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Solution

The fourth proportional to 464,390.82, 640,266.09 and 300,758.23 is: 414,662.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,390.82 : 640,266.09 = 300,758.23 : x
  2. Step 2: Convert to fraction form
    464,390.82/640,266.09 = 300,758.23/x
  3. Step 3: Cross multiply
    464,390.82x = 640,266.09 × 300,758.23
  4. Step 4: Simplify right side
    464,390.82x = 192,565,295,957.42
  5. Step 5: Solve for x
    x = 192,565,295,957.42/464,390.82
  6. Step 6: Final answer
    x = 414,662.15

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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.