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Finding the Fourth Proportional to 278,364.45, 384,142.86 and 151,040.01

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Solution

The fourth proportional to 278,364.45, 384,142.86 and 151,040.01 is: 208,435.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,364.45 : 384,142.86 = 151,040.01 : x
  2. Step 2: Convert to fraction form
    278,364.45/384,142.86 = 151,040.01/x
  3. Step 3: Cross multiply
    278,364.45x = 384,142.86 × 151,040.01
  4. Step 4: Simplify right side
    278,364.45x = 58,020,941,415.83
  5. Step 5: Solve for x
    x = 58,020,941,415.83/278,364.45
  6. Step 6: Final answer
    x = 208,435.17

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.