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Finding the Fourth Proportional to 210,618.96, 290,653.48 and 115,125.68

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Solution

The fourth proportional to 210,618.96, 290,653.48 and 115,125.68 is: 158,873.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,618.96 : 290,653.48 = 115,125.68 : x
  2. Step 2: Convert to fraction form
    210,618.96/290,653.48 = 115,125.68/x
  3. Step 3: Cross multiply
    210,618.96x = 290,653.48 × 115,125.68
  4. Step 4: Simplify right side
    210,618.96x = 33,461,679,529.37
  5. Step 5: Solve for x
    x = 33,461,679,529.37/210,618.96
  6. Step 6: Final answer
    x = 158,873.06

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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.