Home / 209,215.23-313,820.10-51,445.05

Finding the Fourth Proportional to 209,215.23, 313,820.10 and 51,445.05

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Solution

The fourth proportional to 209,215.23, 313,820.10 and 51,445.05 is: 77,166.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,215.23 : 313,820.10 = 51,445.05 : x
  2. Step 2: Convert to fraction form
    209,215.23/313,820.10 = 51,445.05/x
  3. Step 3: Cross multiply
    209,215.23x = 313,820.10 × 51,445.05
  4. Step 4: Simplify right side
    209,215.23x = 16,144,490,735.51
  5. Step 5: Solve for x
    x = 16,144,490,735.51/209,215.23
  6. Step 6: Final answer
    x = 77,166.90

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1.5x scale

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.