Home / 289,011.11-398,828.93-158,188.10

Finding the Fourth Proportional to 289,011.11, 398,828.93 and 158,188.10

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Solution

The fourth proportional to 289,011.11, 398,828.93 and 158,188.10 is: 218,296.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,011.11 : 398,828.93 = 158,188.10 : x
  2. Step 2: Convert to fraction form
    289,011.11/398,828.93 = 158,188.10/x
  3. Step 3: Cross multiply
    289,011.11x = 398,828.93 × 158,188.10
  4. Step 4: Simplify right side
    289,011.11x = 63,089,987,876.65
  5. Step 5: Solve for x
    x = 63,089,987,876.65/289,011.11
  6. Step 6: Final answer
    x = 218,296.07

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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.