Home / 430,010.40-645,015.60-110,161.65

Finding the Fourth Proportional to 430,010.40, 645,015.60 and 110,161.65

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Solution

The fourth proportional to 430,010.40, 645,015.60 and 110,161.65 is: 165,242.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,010.40 : 645,015.60 = 110,161.65 : x
  2. Step 2: Convert to fraction form
    430,010.40/645,015.60 = 110,161.65/x
  3. Step 3: Cross multiply
    430,010.40x = 645,015.60 × 110,161.65
  4. Step 4: Simplify right side
    430,010.40x = 71,055,982,771.74
  5. Step 5: Solve for x
    x = 71,055,982,771.74/430,010.40
  6. Step 6: Final answer
    x = 165,242.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.