Home / 319,558.03-478,462.70-311,087.96

Finding the Fourth Proportional to 319,558.03, 478,462.70 and 311,087.96

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Solution

The fourth proportional to 319,558.03, 478,462.70 and 311,087.96 is: 465,780.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,558.03 : 478,462.70 = 311,087.96 : x
  2. Step 2: Convert to fraction form
    319,558.03/478,462.70 = 311,087.96/x
  3. Step 3: Cross multiply
    319,558.03x = 478,462.70 × 311,087.96
  4. Step 4: Simplify right side
    319,558.03x = 148,843,983,708.86
  5. Step 5: Solve for x
    x = 148,843,983,708.86/319,558.03
  6. Step 6: Final answer
    x = 465,780.77

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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.