Home / 220,210.40-303,885.27-128,323.82

Finding the Fourth Proportional to 220,210.40, 303,885.27 and 128,323.82

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Solution

The fourth proportional to 220,210.40, 303,885.27 and 128,323.82 is: 177,083.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,210.40 : 303,885.27 = 128,323.82 : x
  2. Step 2: Convert to fraction form
    220,210.40/303,885.27 = 128,323.82/x
  3. Step 3: Cross multiply
    220,210.40x = 303,885.27 × 128,323.82
  4. Step 4: Simplify right side
    220,210.40x = 38,995,717,168.71
  5. Step 5: Solve for x
    x = 38,995,717,168.71/220,210.40
  6. Step 6: Final answer
    x = 177,083.91

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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.