Home / 282,239.40-389,493.24-154,912.20

Finding the Fourth Proportional to 282,239.40, 389,493.24 and 154,912.20

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Solution

The fourth proportional to 282,239.40, 389,493.24 and 154,912.20 is: 213,780.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,239.40 : 389,493.24 = 154,912.20 : x
  2. Step 2: Convert to fraction form
    282,239.40/389,493.24 = 154,912.20/x
  3. Step 3: Cross multiply
    282,239.40x = 389,493.24 × 154,912.20
  4. Step 4: Simplify right side
    282,239.40x = 60,337,254,693.53
  5. Step 5: Solve for x
    x = 60,337,254,693.53/282,239.40
  6. Step 6: Final answer
    x = 213,780.41

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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.