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Finding the Fourth Proportional to 278,603.67, 384,477.60 and 151,279.57

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Solution

The fourth proportional to 278,603.67, 384,477.60 and 151,279.57 is: 208,768.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,603.67 : 384,477.60 = 151,279.57 : x
  2. Step 2: Convert to fraction form
    278,603.67/384,477.60 = 151,279.57/x
  3. Step 3: Cross multiply
    278,603.67x = 384,477.60 × 151,279.57
  4. Step 4: Simplify right side
    278,603.67x = 58,163,606,002.63
  5. Step 5: Solve for x
    x = 58,163,606,002.63/278,603.67
  6. Step 6: Final answer
    x = 208,768.27

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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.