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Finding the Fourth Proportional to 282,052.80, 389,235.96 and 154,725.84

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Solution

The fourth proportional to 282,052.80, 389,235.96 and 154,725.84 is: 213,523.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,052.80 : 389,235.96 = 154,725.84 : x
  2. Step 2: Convert to fraction form
    282,052.80/389,235.96 = 154,725.84/x
  3. Step 3: Cross multiply
    282,052.80x = 389,235.96 × 154,725.84
  4. Step 4: Simplify right side
    282,052.80x = 60,224,860,869.21
  5. Step 5: Solve for x
    x = 60,224,860,869.21/282,052.80
  6. Step 6: Final answer
    x = 213,523.36

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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.