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Finding the Fourth Proportional to 243,155.36, 364,722.12 and 74,668.88

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Solution

The fourth proportional to 243,155.36, 364,722.12 and 74,668.88 is: 111,999.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,155.36 : 364,722.12 = 74,668.88 : x
  2. Step 2: Convert to fraction form
    243,155.36/364,722.12 = 74,668.88/x
  3. Step 3: Cross multiply
    243,155.36x = 364,722.12 × 74,668.88
  4. Step 4: Simplify right side
    243,155.36x = 27,233,392,211.63
  5. Step 5: Solve for x
    x = 27,233,392,211.63/243,155.36
  6. Step 6: Final answer
    x = 111,999.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.