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Finding the Fourth Proportional to 386,365.38, 533,384.52 and 300,131.16

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Solution

The fourth proportional to 386,365.38, 533,384.52 and 300,131.16 is: 414,336.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,365.38 : 533,384.52 = 300,131.16 : x
  2. Step 2: Convert to fraction form
    386,365.38/533,384.52 = 300,131.16/x
  3. Step 3: Cross multiply
    386,365.38x = 533,384.52 × 300,131.16
  4. Step 4: Simplify right side
    386,365.38x = 160,085,314,713.64
  5. Step 5: Solve for x
    x = 160,085,314,713.64/386,365.38
  6. Step 6: Final answer
    x = 414,336.59

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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.