Home / 370,516.84-511,031.16-318,921.75

Finding the Fourth Proportional to 370,516.84, 511,031.16 and 318,921.75

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Solution

The fourth proportional to 370,516.84, 511,031.16 and 318,921.75 is: 439,869.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,516.84 : 511,031.16 = 318,921.75 : x
  2. Step 2: Convert to fraction form
    370,516.84/511,031.16 = 318,921.75/x
  3. Step 3: Cross multiply
    370,516.84x = 511,031.16 × 318,921.75
  4. Step 4: Simplify right side
    370,516.84x = 162,978,954,454.80
  5. Step 5: Solve for x
    x = 162,978,954,454.80/370,516.84
  6. Step 6: Final answer
    x = 439,869.22

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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.