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Finding the Fourth Proportional to 278,663.83, 384,560.54 and 151,339.42

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Solution

The fourth proportional to 278,663.83, 384,560.54 and 151,339.42 is: 208,850.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,663.83 : 384,560.54 = 151,339.42 : x
  2. Step 2: Convert to fraction form
    278,663.83/384,560.54 = 151,339.42/x
  3. Step 3: Cross multiply
    278,663.83x = 384,560.54 × 151,339.42
  4. Step 4: Simplify right side
    278,663.83x = 58,199,169,078.49
  5. Step 5: Solve for x
    x = 58,199,169,078.49/278,663.83
  6. Step 6: Final answer
    x = 208,850.82

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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.