Home / 319,229,111.80-478,840,779.78-100,879,489.72

Finding the Fourth Proportional to 319,229,111.80, 478,840,779.78 and 100,879,489.72

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Solution

The fourth proportional to 319,229,111.80, 478,840,779.78 and 100,879,489.72 is: 151,318,321.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,229,111.80 : 478,840,779.78 = 100,879,489.72 : x
  2. Step 2: Convert to fraction form
    319,229,111.80/478,840,779.78 = 100,879,489.72/x
  3. Step 3: Cross multiply
    319,229,111.80x = 478,840,779.78 × 100,879,489.72
  4. Step 4: Simplify right side
    319,229,111.80x = 48,305,213,521,333,288
  5. Step 5: Solve for x
    x = 48,305,213,521,333,288/319,229,111.80
  6. Step 6: Final answer
    x = 151,318,321.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.