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Finding the Fourth Proportional to 211,992.40, 292,485.68 and 127,078.48

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Solution

The fourth proportional to 211,992.40, 292,485.68 and 127,078.48 is: 175,330.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,992.40 : 292,485.68 = 127,078.48 : x
  2. Step 2: Convert to fraction form
    211,992.40/292,485.68 = 127,078.48/x
  3. Step 3: Cross multiply
    211,992.40x = 292,485.68 × 127,078.48
  4. Step 4: Simplify right side
    211,992.40x = 37,168,635,636.17
  5. Step 5: Solve for x
    x = 37,168,635,636.17/211,992.40
  6. Step 6: Final answer
    x = 175,330.04

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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.