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Finding the Fourth Proportional to 211,978.40, 292,466.40 and 127,064.48

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Solution

The fourth proportional to 211,978.40, 292,466.40 and 127,064.48 is: 175,310.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,978.40 : 292,466.40 = 127,064.48 : x
  2. Step 2: Convert to fraction form
    211,978.40/292,466.40 = 127,064.48/x
  3. Step 3: Cross multiply
    211,978.40x = 292,466.40 × 127,064.48
  4. Step 4: Simplify right side
    211,978.40x = 37,162,091,033.47
  5. Step 5: Solve for x
    x = 37,162,091,033.47/211,978.40
  6. Step 6: Final answer
    x = 175,310.74

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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.