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Finding the Fourth Proportional to 321,076.54, 481,637.30 and 128,950.98

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Solution

The fourth proportional to 321,076.54, 481,637.30 and 128,950.98 is: 193,435.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,076.54 : 481,637.30 = 128,950.98 : x
  2. Step 2: Convert to fraction form
    321,076.54/481,637.30 = 128,950.98/x
  3. Step 3: Cross multiply
    321,076.54x = 481,637.30 × 128,950.98
  4. Step 4: Simplify right side
    321,076.54x = 62,107,602,823.22
  5. Step 5: Solve for x
    x = 62,107,602,823.22/321,076.54
  6. Step 6: Final answer
    x = 193,435.50

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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.