Home / 210,516.95-290,519.76-115,029.78

Finding the Fourth Proportional to 210,516.95, 290,519.76 and 115,029.78

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Solution

The fourth proportional to 210,516.95, 290,519.76 and 115,029.78 is: 158,744.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,516.95 : 290,519.76 = 115,029.78 : x
  2. Step 2: Convert to fraction form
    210,516.95/290,519.76 = 115,029.78/x
  3. Step 3: Cross multiply
    210,516.95x = 290,519.76 × 115,029.78
  4. Step 4: Simplify right side
    210,516.95x = 33,418,424,078.45
  5. Step 5: Solve for x
    x = 33,418,424,078.45/210,516.95
  6. Step 6: Final answer
    x = 158,744.58

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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.