Home / 210,965.37-291,132.53-115,478.11

Finding the Fourth Proportional to 210,965.37, 291,132.53 and 115,478.11

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Solution

The fourth proportional to 210,965.37, 291,132.53 and 115,478.11 is: 159,359.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,965.37 : 291,132.53 = 115,478.11 : x
  2. Step 2: Convert to fraction form
    210,965.37/291,132.53 = 115,478.11/x
  3. Step 3: Cross multiply
    210,965.37x = 291,132.53 × 115,478.11
  4. Step 4: Simplify right side
    210,965.37x = 33,619,434,323.92
  5. Step 5: Solve for x
    x = 33,619,434,323.92/210,965.37
  6. Step 6: Final answer
    x = 159,359.97

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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.