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Finding the Fourth Proportional to 210,695.25, 290,764.71 and 127,910.24

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Solution

The fourth proportional to 210,695.25, 290,764.71 and 127,910.24 is: 176,519.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,695.25 : 290,764.71 = 127,910.24 : x
  2. Step 2: Convert to fraction form
    210,695.25/290,764.71 = 127,910.24/x
  3. Step 3: Cross multiply
    210,695.25x = 290,764.71 × 127,910.24
  4. Step 4: Simplify right side
    210,695.25x = 37,191,782,385.81
  5. Step 5: Solve for x
    x = 37,191,782,385.81/210,695.25
  6. Step 6: Final answer
    x = 176,519.32

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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.