Home / 317,629.69-438,330.08-172,435.66

Finding the Fourth Proportional to 317,629.69, 438,330.08 and 172,435.66

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Solution

The fourth proportional to 317,629.69, 438,330.08 and 172,435.66 is: 237,961.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,629.69 : 438,330.08 = 172,435.66 : x
  2. Step 2: Convert to fraction form
    317,629.69/438,330.08 = 172,435.66/x
  3. Step 3: Cross multiply
    317,629.69x = 438,330.08 × 172,435.66
  4. Step 4: Simplify right side
    317,629.69x = 75,583,735,977.92
  5. Step 5: Solve for x
    x = 75,583,735,977.92/317,629.69
  6. Step 6: Final answer
    x = 237,961.81

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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.