Home / 209,313.15-313,623.45-120,411.60

Finding the Fourth Proportional to 209,313.15, 313,623.45 and 120,411.60

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Solution

The fourth proportional to 209,313.15, 313,623.45 and 120,411.60 is: 180,418.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,313.15 : 313,623.45 = 120,411.60 : x
  2. Step 2: Convert to fraction form
    209,313.15/313,623.45 = 120,411.60/x
  3. Step 3: Cross multiply
    209,313.15x = 313,623.45 × 120,411.60
  4. Step 4: Simplify right side
    209,313.15x = 37,763,901,412.02
  5. Step 5: Solve for x
    x = 37,763,901,412.02/209,313.15
  6. Step 6: Final answer
    x = 180,418.20

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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.