Home / 278,550.96-384,409.14-157,690.05

Finding the Fourth Proportional to 278,550.96, 384,409.14 and 157,690.05

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Solution

The fourth proportional to 278,550.96, 384,409.14 and 157,690.05 is: 217,617.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,550.96 : 384,409.14 = 157,690.05 : x
  2. Step 2: Convert to fraction form
    278,550.96/384,409.14 = 157,690.05/x
  3. Step 3: Cross multiply
    278,550.96x = 384,409.14 × 157,690.05
  4. Step 4: Simplify right side
    278,550.96x = 60,617,496,507.06
  5. Step 5: Solve for x
    x = 60,617,496,507.06/278,550.96
  6. Step 6: Final answer
    x = 217,617.26

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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.