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Finding the Fourth Proportional to 274,547.58, 379,013.22 and 172,629.09

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Solution

The fourth proportional to 274,547.58, 379,013.22 and 172,629.09 is: 238,314.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,547.58 : 379,013.22 = 172,629.09 : x
  2. Step 2: Convert to fraction form
    274,547.58/379,013.22 = 172,629.09/x
  3. Step 3: Cross multiply
    274,547.58x = 379,013.22 × 172,629.09
  4. Step 4: Simplify right side
    274,547.58x = 65,428,707,266.57
  5. Step 5: Solve for x
    x = 65,428,707,266.57/274,547.58
  6. Step 6: Final answer
    x = 238,314.64

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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.