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Finding the Fourth Proportional to 210,362.94, 315,659.23 and 121,789.44

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Solution

The fourth proportional to 210,362.94, 315,659.23 and 121,789.44 is: 182,750.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,362.94 : 315,659.23 = 121,789.44 : x
  2. Step 2: Convert to fraction form
    210,362.94/315,659.23 = 121,789.44/x
  3. Step 3: Cross multiply
    210,362.94x = 315,659.23 × 121,789.44
  4. Step 4: Simplify right side
    210,362.94x = 38,443,960,548.06
  5. Step 5: Solve for x
    x = 38,443,960,548.06/210,362.94
  6. Step 6: Final answer
    x = 182,750.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.