Home / 378,865.20-522,901.72-225,913.28

Finding the Fourth Proportional to 378,865.20, 522,901.72 and 225,913.28

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Solution

The fourth proportional to 378,865.20, 522,901.72 and 225,913.28 is: 311,800.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,865.20 : 522,901.72 = 225,913.28 : x
  2. Step 2: Convert to fraction form
    378,865.20/522,901.72 = 225,913.28/x
  3. Step 3: Cross multiply
    378,865.20x = 522,901.72 × 225,913.28
  4. Step 4: Simplify right side
    378,865.20x = 118,130,442,682.84
  5. Step 5: Solve for x
    x = 118,130,442,682.84/378,865.20
  6. Step 6: Final answer
    x = 311,800.72

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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.