Home / 221,265.65-305,267.85-130,576.25

Finding the Fourth Proportional to 221,265.65, 305,267.85 and 130,576.25

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Solution

The fourth proportional to 221,265.65, 305,267.85 and 130,576.25 is: 180,148.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,265.65 : 305,267.85 = 130,576.25 : x
  2. Step 2: Convert to fraction form
    221,265.65/305,267.85 = 130,576.25/x
  3. Step 3: Cross multiply
    221,265.65x = 305,267.85 × 130,576.25
  4. Step 4: Simplify right side
    221,265.65x = 39,860,731,098.56
  5. Step 5: Solve for x
    x = 39,860,731,098.56/221,265.65
  6. Step 6: Final answer
    x = 180,148.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.