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Finding the Fourth Proportional to 300,130.80, 449,696.40 and 211,197.48

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Solution

The fourth proportional to 300,130.80, 449,696.40 and 211,197.48 is: 316,444.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,130.80 : 449,696.40 = 211,197.48 : x
  2. Step 2: Convert to fraction form
    300,130.80/449,696.40 = 211,197.48/x
  3. Step 3: Cross multiply
    300,130.80x = 449,696.40 × 211,197.48
  4. Step 4: Simplify right side
    300,130.80x = 94,974,746,445.07
  5. Step 5: Solve for x
    x = 94,974,746,445.07/300,130.80
  6. Step 6: Final answer
    x = 316,444.52

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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.