Home / 221,313.69-305,412.88-125,820.38

Finding the Fourth Proportional to 221,313.69, 305,412.88 and 125,820.38

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Solution

The fourth proportional to 221,313.69, 305,412.88 and 125,820.38 is: 173,632.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,313.69 : 305,412.88 = 125,820.38 : x
  2. Step 2: Convert to fraction form
    221,313.69/305,412.88 = 125,820.38/x
  3. Step 3: Cross multiply
    221,313.69x = 305,412.88 × 125,820.38
  4. Step 4: Simplify right side
    221,313.69x = 38,427,163,989.39
  5. Step 5: Solve for x
    x = 38,427,163,989.39/221,313.69
  6. Step 6: Final answer
    x = 173,632.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.