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Finding the Fourth Proportional to 210,420.91, 290,380.86 and 114,927.84

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Solution

The fourth proportional to 210,420.91, 290,380.86 and 114,927.84 is: 158,600.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,420.91 : 290,380.86 = 114,927.84 : x
  2. Step 2: Convert to fraction form
    210,420.91/290,380.86 = 114,927.84/x
  3. Step 3: Cross multiply
    210,420.91x = 290,380.86 × 114,927.84
  4. Step 4: Simplify right side
    210,420.91x = 33,372,844,362.06
  5. Step 5: Solve for x
    x = 33,372,844,362.06/210,420.91
  6. Step 6: Final answer
    x = 158,600.42

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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.