Home / 209,005.20-313,313.40-145,825.20

Finding the Fourth Proportional to 209,005.20, 313,313.40 and 145,825.20

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Solution

The fourth proportional to 209,005.20, 313,313.40 and 145,825.20 is: 218,602.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,005.20 : 313,313.40 = 145,825.20 : x
  2. Step 2: Convert to fraction form
    209,005.20/313,313.40 = 145,825.20/x
  3. Step 3: Cross multiply
    209,005.20x = 313,313.40 × 145,825.20
  4. Step 4: Simplify right side
    209,005.20x = 45,688,989,217.68
  5. Step 5: Solve for x
    x = 45,688,989,217.68/209,005.20
  6. Step 6: Final answer
    x = 218,602.17

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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.