Home / 338,317.38-507,279.26-127,971.72

Finding the Fourth Proportional to 338,317.38, 507,279.26 and 127,971.72

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Solution

The fourth proportional to 338,317.38, 507,279.26 and 127,971.72 is: 191,883.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,317.38 : 507,279.26 = 127,971.72 : x
  2. Step 2: Convert to fraction form
    338,317.38/507,279.26 = 127,971.72/x
  3. Step 3: Cross multiply
    338,317.38x = 507,279.26 × 127,971.72
  4. Step 4: Simplify right side
    338,317.38x = 64,917,399,422.53
  5. Step 5: Solve for x
    x = 64,917,399,422.53/338,317.38
  6. Step 6: Final answer
    x = 191,883.13

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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.