Home / 309,635.36-427,291.66-180,648.83

Finding the Fourth Proportional to 309,635.36, 427,291.66 and 180,648.83

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Solution

The fourth proportional to 309,635.36, 427,291.66 and 180,648.83 is: 249,292.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,635.36 : 427,291.66 = 180,648.83 : x
  2. Step 2: Convert to fraction form
    309,635.36/427,291.66 = 180,648.83/x
  3. Step 3: Cross multiply
    309,635.36x = 427,291.66 × 180,648.83
  4. Step 4: Simplify right side
    309,635.36x = 77,189,738,725.65
  5. Step 5: Solve for x
    x = 77,189,738,725.65/309,635.36
  6. Step 6: Final answer
    x = 249,292.39

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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.