Home / 219,870.32-303,428.49-129,224.98

Finding the Fourth Proportional to 219,870.32, 303,428.49 and 129,224.98

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Solution

The fourth proportional to 219,870.32, 303,428.49 and 129,224.98 is: 178,334.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,870.32 : 303,428.49 = 129,224.98 : x
  2. Step 2: Convert to fraction form
    219,870.32/303,428.49 = 129,224.98/x
  3. Step 3: Cross multiply
    219,870.32x = 303,428.49 × 129,224.98
  4. Step 4: Simplify right side
    219,870.32x = 39,210,540,551.68
  5. Step 5: Solve for x
    x = 39,210,540,551.68/219,870.32
  6. Step 6: Final answer
    x = 178,334.85

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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.