Home / 278,458.16-384,272.64-151,133.76

Finding the Fourth Proportional to 278,458.16, 384,272.64 and 151,133.76

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Solution

The fourth proportional to 278,458.16, 384,272.64 and 151,133.76 is: 208,564.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,458.16 : 384,272.64 = 151,133.76 : x
  2. Step 2: Convert to fraction form
    278,458.16/384,272.64 = 151,133.76/x
  3. Step 3: Cross multiply
    278,458.16x = 384,272.64 × 151,133.76
  4. Step 4: Simplify right side
    278,458.16x = 58,076,568,948.33
  5. Step 5: Solve for x
    x = 58,076,568,948.33/278,458.16
  6. Step 6: Final answer
    x = 208,564.79

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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.