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Finding the Fourth Proportional to 274,802, 379,226.76 and 155,570

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Solution

The fourth proportional to 274,802, 379,226.76 and 155,570 is: 214,686.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,802 : 379,226.76 = 155,570 : x
  2. Step 2: Convert to fraction form
    274,802/379,226.76 = 155,570/x
  3. Step 3: Cross multiply
    274,802x = 379,226.76 × 155,570
  4. Step 4: Simplify right side
    274,802x = 58,996,307,053.20
  5. Step 5: Solve for x
    x = 58,996,307,053.20/274,802
  6. Step 6: Final answer
    x = 214,686.60

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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.