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Finding the Fourth Proportional to 319,483.74, 440,775.90 and 204,825.54

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Solution

The fourth proportional to 319,483.74, 440,775.90 and 204,825.54 is: 282,587.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,483.74 : 440,775.90 = 204,825.54 : x
  2. Step 2: Convert to fraction form
    319,483.74/440,775.90 = 204,825.54/x
  3. Step 3: Cross multiply
    319,483.74x = 440,775.90 × 204,825.54
  4. Step 4: Simplify right side
    319,483.74x = 90,282,161,736.49
  5. Step 5: Solve for x
    x = 90,282,161,736.49/319,483.74
  6. Step 6: Final answer
    x = 282,587.66

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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.