Home / 338,975.28-508,263.56-128,628

Finding the Fourth Proportional to 338,975.28, 508,263.56 and 128,628

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Solution

The fourth proportional to 338,975.28, 508,263.56 and 128,628 is: 192,866.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,975.28 : 508,263.56 = 128,628 : x
  2. Step 2: Convert to fraction form
    338,975.28/508,263.56 = 128,628/x
  3. Step 3: Cross multiply
    338,975.28x = 508,263.56 × 128,628
  4. Step 4: Simplify right side
    338,975.28x = 65,376,925,195.68
  5. Step 5: Solve for x
    x = 65,376,925,195.68/338,975.28
  6. Step 6: Final answer
    x = 192,866.35

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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.