Home / 390,860.23-539,310.44-245,581.85

Finding the Fourth Proportional to 390,860.23, 539,310.44 and 245,581.85

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Solution

The fourth proportional to 390,860.23, 539,310.44 and 245,581.85 is: 338,854.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,860.23 : 539,310.44 = 245,581.85 : x
  2. Step 2: Convert to fraction form
    390,860.23/539,310.44 = 245,581.85/x
  3. Step 3: Cross multiply
    390,860.23x = 539,310.44 × 245,581.85
  4. Step 4: Simplify right side
    390,860.23x = 132,444,852,882.96
  5. Step 5: Solve for x
    x = 132,444,852,882.96/390,860.23
  6. Step 6: Final answer
    x = 338,854.77

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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.