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Finding the Fourth Proportional to 321,803.40, 482,877.90 and 134,833.80

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Solution

The fourth proportional to 321,803.40, 482,877.90 and 134,833.80 is: 202,323.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,803.40 : 482,877.90 = 134,833.80 : x
  2. Step 2: Convert to fraction form
    321,803.40/482,877.90 = 134,833.80/x
  3. Step 3: Cross multiply
    321,803.40x = 482,877.90 × 134,833.80
  4. Step 4: Simplify right side
    321,803.40x = 65,108,262,193.02
  5. Step 5: Solve for x
    x = 65,108,262,193.02/321,803.40
  6. Step 6: Final answer
    x = 202,323.10

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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.