Home / 256,721.49-384,918.21-123,336.36

Finding the Fourth Proportional to 256,721.49, 384,918.21 and 123,336.36

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Solution

The fourth proportional to 256,721.49, 384,918.21 and 123,336.36 is: 184,925.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,721.49 : 384,918.21 = 123,336.36 : x
  2. Step 2: Convert to fraction form
    256,721.49/384,918.21 = 123,336.36/x
  3. Step 3: Cross multiply
    256,721.49x = 384,918.21 × 123,336.36
  4. Step 4: Simplify right side
    256,721.49x = 47,474,410,919.12
  5. Step 5: Solve for x
    x = 47,474,410,919.12/256,721.49
  6. Step 6: Final answer
    x = 184,925.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.