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Finding the Fourth Proportional to 211,978.90, 292,467.09 and 127,064.98

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Solution

The fourth proportional to 211,978.90, 292,467.09 and 127,064.98 is: 175,311.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,978.90 : 292,467.09 = 127,064.98 : x
  2. Step 2: Convert to fraction form
    211,978.90/292,467.09 = 127,064.98/x
  3. Step 3: Cross multiply
    211,978.90x = 292,467.09 × 127,064.98
  4. Step 4: Simplify right side
    211,978.90x = 37,162,324,941.51
  5. Step 5: Solve for x
    x = 37,162,324,941.51/211,978.90
  6. Step 6: Final answer
    x = 175,311.43

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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.