Home / 291,763.20-434,576.40-278,112

Finding the Fourth Proportional to 291,763.20, 434,576.40 and 278,112

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Solution

The fourth proportional to 291,763.20, 434,576.40 and 278,112 is: 414,243.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,763.20 : 434,576.40 = 278,112 : x
  2. Step 2: Convert to fraction form
    291,763.20/434,576.40 = 278,112/x
  3. Step 3: Cross multiply
    291,763.20x = 434,576.40 × 278,112
  4. Step 4: Simplify right side
    291,763.20x = 120,860,911,756.80
  5. Step 5: Solve for x
    x = 120,860,911,756.80/291,763.20
  6. Step 6: Final answer
    x = 414,243.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.