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Finding the Fourth Proportional to 274,798.55, 379,215.38 and 153,944.93

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Solution

The fourth proportional to 274,798.55, 379,215.38 and 153,944.93 is: 212,440.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,798.55 : 379,215.38 = 153,944.93 : x
  2. Step 2: Convert to fraction form
    274,798.55/379,215.38 = 153,944.93/x
  3. Step 3: Cross multiply
    274,798.55x = 379,215.38 × 153,944.93
  4. Step 4: Simplify right side
    274,798.55x = 58,378,283,617.81
  5. Step 5: Solve for x
    x = 58,378,283,617.81/274,798.55
  6. Step 6: Final answer
    x = 212,440.29

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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.