Home / 309,358.46-426,907.56-180,288.70

Finding the Fourth Proportional to 309,358.46, 426,907.56 and 180,288.70

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Solution

The fourth proportional to 309,358.46, 426,907.56 and 180,288.70 is: 248,794.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,358.46 : 426,907.56 = 180,288.70 : x
  2. Step 2: Convert to fraction form
    309,358.46/426,907.56 = 180,288.70/x
  3. Step 3: Cross multiply
    309,358.46x = 426,907.56 × 180,288.70
  4. Step 4: Simplify right side
    309,358.46x = 76,966,609,012.57
  5. Step 5: Solve for x
    x = 76,966,609,012.57/309,358.46
  6. Step 6: Final answer
    x = 248,794.26

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1.5x scale

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.