Home / 378,735.45-522,434.52-242,721.06

Finding the Fourth Proportional to 378,735.45, 522,434.52 and 242,721.06

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Solution

The fourth proportional to 378,735.45, 522,434.52 and 242,721.06 is: 334,813.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,735.45 : 522,434.52 = 242,721.06 : x
  2. Step 2: Convert to fraction form
    378,735.45/522,434.52 = 242,721.06/x
  3. Step 3: Cross multiply
    378,735.45x = 522,434.52 × 242,721.06
  4. Step 4: Simplify right side
    378,735.45x = 126,805,860,474.99
  5. Step 5: Solve for x
    x = 126,805,860,474.99/378,735.45
  6. Step 6: Final answer
    x = 334,813.81

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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.