Home / 378,005.48-566,835.42-128,620.52

Finding the Fourth Proportional to 378,005.48, 566,835.42 and 128,620.52

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Solution

The fourth proportional to 378,005.48, 566,835.42 and 128,620.52 is: 192,871.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,005.48 : 566,835.42 = 128,620.52 : x
  2. Step 2: Convert to fraction form
    378,005.48/566,835.42 = 128,620.52/x
  3. Step 3: Cross multiply
    378,005.48x = 566,835.42 × 128,620.52
  4. Step 4: Simplify right side
    378,005.48x = 72,906,666,474.82
  5. Step 5: Solve for x
    x = 72,906,666,474.82/378,005.48
  6. Step 6: Final answer
    x = 192,871.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.