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Finding the Fourth Proportional to 550,947.69, 760,270.71 and 305,919.84

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Solution

The fourth proportional to 550,947.69, 760,270.71 and 305,919.84 is: 422,148.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,947.69 : 760,270.71 = 305,919.84 : x
  2. Step 2: Convert to fraction form
    550,947.69/760,270.71 = 305,919.84/x
  3. Step 3: Cross multiply
    550,947.69x = 760,270.71 × 305,919.84
  4. Step 4: Simplify right side
    550,947.69x = 232,581,893,959.89
  5. Step 5: Solve for x
    x = 232,581,893,959.89/550,947.69
  6. Step 6: Final answer
    x = 422,148.78

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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.