Home / 390,861.23-539,311.82-245,582.85

Finding the Fourth Proportional to 390,861.23, 539,311.82 and 245,582.85

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Solution

The fourth proportional to 390,861.23, 539,311.82 and 245,582.85 is: 338,856.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,861.23 : 539,311.82 = 245,582.85 : x
  2. Step 2: Convert to fraction form
    390,861.23/539,311.82 = 245,582.85/x
  3. Step 3: Cross multiply
    390,861.23x = 539,311.82 × 245,582.85
  4. Step 4: Simplify right side
    390,861.23x = 132,445,733,794.29
  5. Step 5: Solve for x
    x = 132,445,733,794.29/390,861.23
  6. Step 6: Final answer
    x = 338,856.16

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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.