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Finding the Fourth Proportional to 370,519.84, 511,035.30 and 318,924.75

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Solution

The fourth proportional to 370,519.84, 511,035.30 and 318,924.75 is: 439,873.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,519.84 : 511,035.30 = 318,924.75 : x
  2. Step 2: Convert to fraction form
    370,519.84/511,035.30 = 318,924.75/x
  3. Step 3: Cross multiply
    370,519.84x = 511,035.30 × 318,924.75
  4. Step 4: Simplify right side
    370,519.84x = 162,981,805,293.68
  5. Step 5: Solve for x
    x = 162,981,805,293.68/370,519.84
  6. Step 6: Final answer
    x = 439,873.36

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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.