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Finding the Fourth Proportional to 278,367.68, 384,146.40 and 151,040.96

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Solution

The fourth proportional to 278,367.68, 384,146.40 and 151,040.96 is: 208,435.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,367.68 : 384,146.40 = 151,040.96 : x
  2. Step 2: Convert to fraction form
    278,367.68/384,146.40 = 151,040.96/x
  3. Step 3: Cross multiply
    278,367.68x = 384,146.40 × 151,040.96
  4. Step 4: Simplify right side
    278,367.68x = 58,021,841,036.54
  5. Step 5: Solve for x
    x = 58,021,841,036.54/278,367.68
  6. Step 6: Final answer
    x = 208,435.98

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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.