Home / 390,927,069.79-539,489,891.41-230,002,286.41

Finding the Fourth Proportional to 390,927,069.79, 539,489,891.41 and 230,002,286.41

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Solution

The fourth proportional to 390,927,069.79, 539,489,891.41 and 230,002,286.41 is: 317,409,353.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,927,069.79 : 539,489,891.41 = 230,002,286.41 : x
  2. Step 2: Convert to fraction form
    390,927,069.79/539,489,891.41 = 230,002,286.41/x
  3. Step 3: Cross multiply
    390,927,069.79x = 539,489,891.41 × 230,002,286.41
  4. Step 4: Simplify right side
    390,927,069.79x = 124,083,908,519,382,608
  5. Step 5: Solve for x
    x = 124,083,908,519,382,608/390,927,069.79
  6. Step 6: Final answer
    x = 317,409,353.59

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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.