Home / 390,528.45-538,912.68-227,185.35

Finding the Fourth Proportional to 390,528.45, 538,912.68 and 227,185.35

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Solution

The fourth proportional to 390,528.45, 538,912.68 and 227,185.35 is: 313,506.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,528.45 : 538,912.68 = 227,185.35 : x
  2. Step 2: Convert to fraction form
    390,528.45/538,912.68 = 227,185.35/x
  3. Step 3: Cross multiply
    390,528.45x = 538,912.68 × 227,185.35
  4. Step 4: Simplify right side
    390,528.45x = 122,433,065,825.24
  5. Step 5: Solve for x
    x = 122,433,065,825.24/390,528.45
  6. Step 6: Final answer
    x = 313,506.14

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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.