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Finding the Fourth Proportional to 210,908.71, 291,054.04 and 115,415.41

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Solution

The fourth proportional to 210,908.71, 291,054.04 and 115,415.41 is: 159,273.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,908.71 : 291,054.04 = 115,415.41 : x
  2. Step 2: Convert to fraction form
    210,908.71/291,054.04 = 115,415.41/x
  3. Step 3: Cross multiply
    210,908.71x = 291,054.04 × 115,415.41
  4. Step 4: Simplify right side
    210,908.71x = 33,592,120,781.68
  5. Step 5: Solve for x
    x = 33,592,120,781.68/210,908.71
  6. Step 6: Final answer
    x = 159,273.27

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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.