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Finding the Fourth Proportional to 321,904.80, 482,770.80 and 134,877.60

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Solution

The fourth proportional to 321,904.80, 482,770.80 and 134,877.60 is: 202,280.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,904.80 : 482,770.80 = 134,877.60 : x
  2. Step 2: Convert to fraction form
    321,904.80/482,770.80 = 134,877.60/x
  3. Step 3: Cross multiply
    321,904.80x = 482,770.80 × 134,877.60
  4. Step 4: Simplify right side
    321,904.80x = 65,114,966,854.08
  5. Step 5: Solve for x
    x = 65,114,966,854.08/321,904.80
  6. Step 6: Final answer
    x = 202,280.20

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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.