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Finding the Fourth Proportional to 211,016.70, 291,203.46 and 115,529.46

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Solution

The fourth proportional to 211,016.70, 291,203.46 and 115,529.46 is: 159,430.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,016.70 : 291,203.46 = 115,529.46 : x
  2. Step 2: Convert to fraction form
    211,016.70/291,203.46 = 115,529.46/x
  3. Step 3: Cross multiply
    211,016.70x = 291,203.46 × 115,529.46
  4. Step 4: Simplify right side
    211,016.70x = 33,642,578,483.93
  5. Step 5: Solve for x
    x = 33,642,578,483.93/211,016.70
  6. Step 6: Final answer
    x = 159,430.88

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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.