Home / 210,963.39-291,128.98-115,469.25

Finding the Fourth Proportional to 210,963.39, 291,128.98 and 115,469.25

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Solution

The fourth proportional to 210,963.39, 291,128.98 and 115,469.25 is: 159,347.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,963.39 : 291,128.98 = 115,469.25 : x
  2. Step 2: Convert to fraction form
    210,963.39/291,128.98 = 115,469.25/x
  3. Step 3: Cross multiply
    210,963.39x = 291,128.98 × 115,469.25
  4. Step 4: Simplify right side
    210,963.39x = 33,616,444,973.87
  5. Step 5: Solve for x
    x = 33,616,444,973.87/210,963.39
  6. Step 6: Final answer
    x = 159,347.29

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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.