Home / 278,857.02-384,821.67-158,021.31

Finding the Fourth Proportional to 278,857.02, 384,821.67 and 158,021.31

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Solution

The fourth proportional to 278,857.02, 384,821.67 and 158,021.31 is: 218,068.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,857.02 : 384,821.67 = 158,021.31 : x
  2. Step 2: Convert to fraction form
    278,857.02/384,821.67 = 158,021.31/x
  3. Step 3: Cross multiply
    278,857.02x = 384,821.67 × 158,021.31
  4. Step 4: Simplify right side
    278,857.02x = 60,810,024,409.79
  5. Step 5: Solve for x
    x = 60,810,024,409.79/278,857.02
  6. Step 6: Final answer
    x = 218,068.83

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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.