Home / 316,147.80-436,292.60-172,916.32

Finding the Fourth Proportional to 316,147.80, 436,292.60 and 172,916.32

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Solution

The fourth proportional to 316,147.80, 436,292.60 and 172,916.32 is: 238,629.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,147.80 : 436,292.60 = 172,916.32 : x
  2. Step 2: Convert to fraction form
    316,147.80/436,292.60 = 172,916.32/x
  3. Step 3: Cross multiply
    316,147.80x = 436,292.60 × 172,916.32
  4. Step 4: Simplify right side
    316,147.80x = 75,442,110,835.23
  5. Step 5: Solve for x
    x = 75,442,110,835.23/316,147.80
  6. Step 6: Final answer
    x = 238,629.25

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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.