Home / 278,812.48-384,786.32-157,983.16

Finding the Fourth Proportional to 278,812.48, 384,786.32 and 157,983.16

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Solution

The fourth proportional to 278,812.48, 384,786.32 and 157,983.16 is: 218,030.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,812.48 : 384,786.32 = 157,983.16 : x
  2. Step 2: Convert to fraction form
    278,812.48/384,786.32 = 157,983.16/x
  3. Step 3: Cross multiply
    278,812.48x = 384,786.32 × 157,983.16
  4. Step 4: Simplify right side
    278,812.48x = 60,789,758,758.37
  5. Step 5: Solve for x
    x = 60,789,758,758.37/278,812.48
  6. Step 6: Final answer
    x = 218,030.98

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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.