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Finding the Fourth Proportional to 275,034.78, 379,547.51 and 154,176.03

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Solution

The fourth proportional to 275,034.78, 379,547.51 and 154,176.03 is: 212,762.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,034.78 : 379,547.51 = 154,176.03 : x
  2. Step 2: Convert to fraction form
    275,034.78/379,547.51 = 154,176.03/x
  3. Step 3: Cross multiply
    275,034.78x = 379,547.51 × 154,176.03
  4. Step 4: Simplify right side
    275,034.78x = 58,517,127,517.31
  5. Step 5: Solve for x
    x = 58,517,127,517.31/275,034.78
  6. Step 6: Final answer
    x = 212,762.65

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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.