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Finding the Fourth Proportional to 282,369.63, 389,676.38 and 155,045.73

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Solution

The fourth proportional to 282,369.63, 389,676.38 and 155,045.73 is: 213,966.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,369.63 : 389,676.38 = 155,045.73 : x
  2. Step 2: Convert to fraction form
    282,369.63/389,676.38 = 155,045.73/x
  3. Step 3: Cross multiply
    282,369.63x = 389,676.38 × 155,045.73
  4. Step 4: Simplify right side
    282,369.63x = 60,417,658,025.63
  5. Step 5: Solve for x
    x = 60,417,658,025.63/282,369.63
  6. Step 6: Final answer
    x = 213,966.56

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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.