Home / 289,740.15-434,603.59-76,523.09

Finding the Fourth Proportional to 289,740.15, 434,603.59 and 76,523.09

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Solution

The fourth proportional to 289,740.15, 434,603.59 and 76,523.09 is: 114,782.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,740.15 : 434,603.59 = 76,523.09 : x
  2. Step 2: Convert to fraction form
    289,740.15/434,603.59 = 76,523.09/x
  3. Step 3: Cross multiply
    289,740.15x = 434,603.59 × 76,523.09
  4. Step 4: Simplify right side
    289,740.15x = 33,257,207,267.57
  5. Step 5: Solve for x
    x = 33,257,207,267.57/289,740.15
  6. Step 6: Final answer
    x = 114,782.87

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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.