Home / 278,973.83-384,975.78-158,126.24

Finding the Fourth Proportional to 278,973.83, 384,975.78 and 158,126.24

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Solution

The fourth proportional to 278,973.83, 384,975.78 and 158,126.24 is: 218,209.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,973.83 : 384,975.78 = 158,126.24 : x
  2. Step 2: Convert to fraction form
    278,973.83/384,975.78 = 158,126.24/x
  3. Step 3: Cross multiply
    278,973.83x = 384,975.78 × 158,126.24
  4. Step 4: Simplify right side
    278,973.83x = 60,874,772,582.47
  5. Step 5: Solve for x
    x = 60,874,772,582.47/278,973.83
  6. Step 6: Final answer
    x = 218,209.62

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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.