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Finding the Fourth Proportional to 210,182.70, 290,049.40 and 114,687.75

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Solution

The fourth proportional to 210,182.70, 290,049.40 and 114,687.75 is: 158,267.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,182.70 : 290,049.40 = 114,687.75 : x
  2. Step 2: Convert to fraction form
    210,182.70/290,049.40 = 114,687.75/x
  3. Step 3: Cross multiply
    210,182.70x = 290,049.40 × 114,687.75
  4. Step 4: Simplify right side
    210,182.70x = 33,265,111,337.88
  5. Step 5: Solve for x
    x = 33,265,111,337.88/210,182.70
  6. Step 6: Final answer
    x = 158,267.60

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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.