Home / 209,470.16-313,779-167,420.72

Finding the Fourth Proportional to 209,470.16, 313,779 and 167,420.72

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Solution

The fourth proportional to 209,470.16, 313,779 and 167,420.72 is: 250,790.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,470.16 : 313,779 = 167,420.72 : x
  2. Step 2: Convert to fraction form
    209,470.16/313,779 = 167,420.72/x
  3. Step 3: Cross multiply
    209,470.16x = 313,779 × 167,420.72
  4. Step 4: Simplify right side
    209,470.16x = 52,533,106,100.88
  5. Step 5: Solve for x
    x = 52,533,106,100.88/209,470.16
  6. Step 6: Final answer
    x = 250,790.40

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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.