Home / 278,122.14-383,822.63-155,628.27

Finding the Fourth Proportional to 278,122.14, 383,822.63 and 155,628.27

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Solution

The fourth proportional to 278,122.14, 383,822.63 and 155,628.27 is: 214,774.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,122.14 : 383,822.63 = 155,628.27 : x
  2. Step 2: Convert to fraction form
    278,122.14/383,822.63 = 155,628.27/x
  3. Step 3: Cross multiply
    278,122.14x = 383,822.63 × 155,628.27
  4. Step 4: Simplify right side
    278,122.14x = 59,733,651,115.61
  5. Step 5: Solve for x
    x = 59,733,651,115.61/278,122.14
  6. Step 6: Final answer
    x = 214,774.89

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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.