Home / 219,499.28-302,902.81-128,853.80

Finding the Fourth Proportional to 219,499.28, 302,902.81 and 128,853.80

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Solution

The fourth proportional to 219,499.28, 302,902.81 and 128,853.80 is: 177,814.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,499.28 : 302,902.81 = 128,853.80 : x
  2. Step 2: Convert to fraction form
    219,499.28/302,902.81 = 128,853.80/x
  3. Step 3: Cross multiply
    219,499.28x = 302,902.81 × 128,853.80
  4. Step 4: Simplify right side
    219,499.28x = 39,030,178,099.18
  5. Step 5: Solve for x
    x = 39,030,178,099.18/219,499.28
  6. Step 6: Final answer
    x = 177,814.61

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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.