Home / 289,904.50-434,897.77-90,245.07

Finding the Fourth Proportional to 289,904.50, 434,897.77 and 90,245.07

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Solution

The fourth proportional to 289,904.50, 434,897.77 and 90,245.07 is: 135,380.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,904.50 : 434,897.77 = 90,245.07 : x
  2. Step 2: Convert to fraction form
    289,904.50/434,897.77 = 90,245.07/x
  3. Step 3: Cross multiply
    289,904.50x = 434,897.77 × 90,245.07
  4. Step 4: Simplify right side
    289,904.50x = 39,247,379,696.49
  5. Step 5: Solve for x
    x = 39,247,379,696.49/289,904.50
  6. Step 6: Final answer
    x = 135,380.37

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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.