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Finding the Fourth Proportional to 278,767.98, 384,699.51 and 151,442.73

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Solution

The fourth proportional to 278,767.98, 384,699.51 and 151,442.73 is: 208,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,767.98 : 384,699.51 = 151,442.73 : x
  2. Step 2: Convert to fraction form
    278,767.98/384,699.51 = 151,442.73/x
  3. Step 3: Cross multiply
    278,767.98x = 384,699.51 × 151,442.73
  4. Step 4: Simplify right side
    278,767.98x = 58,259,944,024.06
  5. Step 5: Solve for x
    x = 58,259,944,024.06/278,767.98
  6. Step 6: Final answer
    x = 208,990.80

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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.