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Finding the Fourth Proportional to 210,504.56, 290,492.87 and 115,009.20

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Solution

The fourth proportional to 210,504.56, 290,492.87 and 115,009.20 is: 158,710.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,504.56 : 290,492.87 = 115,009.20 : x
  2. Step 2: Convert to fraction form
    210,504.56/290,492.87 = 115,009.20/x
  3. Step 3: Cross multiply
    210,504.56x = 290,492.87 × 115,009.20
  4. Step 4: Simplify right side
    210,504.56x = 33,409,352,009.36
  5. Step 5: Solve for x
    x = 33,409,352,009.36/210,504.56
  6. Step 6: Final answer
    x = 158,710.83

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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.