Home / 210,511.20-290,504.95-115,018.62

Finding the Fourth Proportional to 210,511.20, 290,504.95 and 115,018.62

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Solution

The fourth proportional to 210,511.20, 290,504.95 and 115,018.62 is: 158,725.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,511.20 : 290,504.95 = 115,018.62 : x
  2. Step 2: Convert to fraction form
    210,511.20/290,504.95 = 115,018.62/x
  3. Step 3: Cross multiply
    210,511.20x = 290,504.95 × 115,018.62
  4. Step 4: Simplify right side
    210,511.20x = 33,413,478,452.17
  5. Step 5: Solve for x
    x = 33,413,478,452.17/210,511.20
  6. Step 6: Final answer
    x = 158,725.42

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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.