Home / 289,109.08-398,975.27-158,284.55

Finding the Fourth Proportional to 289,109.08, 398,975.27 and 158,284.55

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Solution

The fourth proportional to 289,109.08, 398,975.27 and 158,284.55 is: 218,435.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,109.08 : 398,975.27 = 158,284.55 : x
  2. Step 2: Convert to fraction form
    289,109.08/398,975.27 = 158,284.55/x
  3. Step 3: Cross multiply
    289,109.08x = 398,975.27 × 158,284.55
  4. Step 4: Simplify right side
    289,109.08x = 63,151,620,281.66
  5. Step 5: Solve for x
    x = 63,151,620,281.66/289,109.08
  6. Step 6: Final answer
    x = 218,435.27

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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.