Home / 338,739.36-508,109.22-86,038.80

Finding the Fourth Proportional to 338,739.36, 508,109.22 and 86,038.80

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Solution

The fourth proportional to 338,739.36, 508,109.22 and 86,038.80 is: 129,058.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,739.36 : 508,109.22 = 86,038.80 : x
  2. Step 2: Convert to fraction form
    338,739.36/508,109.22 = 86,038.80/x
  3. Step 3: Cross multiply
    338,739.36x = 508,109.22 × 86,038.80
  4. Step 4: Simplify right side
    338,739.36x = 43,717,107,557.74
  5. Step 5: Solve for x
    x = 43,717,107,557.74/338,739.36
  6. Step 6: Final answer
    x = 129,058.25

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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.