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Finding the Fourth Proportional to 310,886.88, 427,986.24 and 296,603.84

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Solution

The fourth proportional to 310,886.88, 427,986.24 and 296,603.84 is: 408,323.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,886.88 : 427,986.24 = 296,603.84 : x
  2. Step 2: Convert to fraction form
    310,886.88/427,986.24 = 296,603.84/x
  3. Step 3: Cross multiply
    310,886.88x = 427,986.24 × 296,603.84
  4. Step 4: Simplify right side
    310,886.88x = 126,942,362,251.16
  5. Step 5: Solve for x
    x = 126,942,362,251.16/310,886.88
  6. Step 6: Final answer
    x = 408,323.32

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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.