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Finding the Fourth Proportional to 210,671.06, 290,726 and 115,177.74

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Solution

The fourth proportional to 210,671.06, 290,726 and 115,177.74 is: 158,945.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,671.06 : 290,726 = 115,177.74 : x
  2. Step 2: Convert to fraction form
    210,671.06/290,726 = 115,177.74/x
  3. Step 3: Cross multiply
    210,671.06x = 290,726 × 115,177.74
  4. Step 4: Simplify right side
    210,671.06x = 33,485,163,639.24
  5. Step 5: Solve for x
    x = 33,485,163,639.24/210,671.06
  6. Step 6: Final answer
    x = 158,945.25

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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.