Home / 210,835.20-290,943.36-115,343.76

Finding the Fourth Proportional to 210,835.20, 290,943.36 and 115,343.76

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Solution

The fourth proportional to 210,835.20, 290,943.36 and 115,343.76 is: 159,169.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,835.20 : 290,943.36 = 115,343.76 : x
  2. Step 2: Convert to fraction form
    210,835.20/290,943.36 = 115,343.76/x
  3. Step 3: Cross multiply
    210,835.20x = 290,943.36 × 115,343.76
  4. Step 4: Simplify right side
    210,835.20x = 33,558,501,089.43
  5. Step 5: Solve for x
    x = 33,558,501,089.43/210,835.20
  6. Step 6: Final answer
    x = 159,169.35

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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.