Home / 338,837.20-508,457.40-128,496.40

Finding the Fourth Proportional to 338,837.20, 508,457.40 and 128,496.40

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Solution

The fourth proportional to 338,837.20, 508,457.40 and 128,496.40 is: 192,821.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,837.20 : 508,457.40 = 128,496.40 : x
  2. Step 2: Convert to fraction form
    338,837.20/508,457.40 = 128,496.40/x
  3. Step 3: Cross multiply
    338,837.20x = 508,457.40 × 128,496.40
  4. Step 4: Simplify right side
    338,837.20x = 65,334,945,453.36
  5. Step 5: Solve for x
    x = 65,334,945,453.36/338,837.20
  6. Step 6: Final answer
    x = 192,821.05

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1.5x scale

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.