Home / 398,354,442.65-549,729,660.42-219,734,301.77

Finding the Fourth Proportional to 398,354,442.65, 549,729,660.42 and 219,734,301.77

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Solution

The fourth proportional to 398,354,442.65, 549,729,660.42 and 219,734,301.77 is: 303,233,628.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,354,442.65 : 549,729,660.42 = 219,734,301.77 : x
  2. Step 2: Convert to fraction form
    398,354,442.65/549,729,660.42 = 219,734,301.77/x
  3. Step 3: Cross multiply
    398,354,442.65x = 549,729,660.42 × 219,734,301.77
  4. Step 4: Simplify right side
    398,354,442.65x = 120,794,463,094,647,904
  5. Step 5: Solve for x
    x = 120,794,463,094,647,904/398,354,442.65
  6. Step 6: Final answer
    x = 303,233,628.55

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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.