Home / 258,511.12-387,835.02-118,236.94

Finding the Fourth Proportional to 258,511.12, 387,835.02 and 118,236.94

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Solution

The fourth proportional to 258,511.12, 387,835.02 and 118,236.94 is: 177,386.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,511.12 : 387,835.02 = 118,236.94 : x
  2. Step 2: Convert to fraction form
    258,511.12/387,835.02 = 118,236.94/x
  3. Step 3: Cross multiply
    258,511.12x = 387,835.02 × 118,236.94
  4. Step 4: Simplify right side
    258,511.12x = 45,856,425,020.05
  5. Step 5: Solve for x
    x = 45,856,425,020.05/258,511.12
  6. Step 6: Final answer
    x = 177,386.67

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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.