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Finding the Fourth Proportional to 243,071.30, 335,303.61 and 142,449.86

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Solution

The fourth proportional to 243,071.30, 335,303.61 and 142,449.86 is: 196,501.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,071.30 : 335,303.61 = 142,449.86 : x
  2. Step 2: Convert to fraction form
    243,071.30/335,303.61 = 142,449.86/x
  3. Step 3: Cross multiply
    243,071.30x = 335,303.61 × 142,449.86
  4. Step 4: Simplify right side
    243,071.30x = 47,763,952,301.99
  5. Step 5: Solve for x
    x = 47,763,952,301.99/243,071.30
  6. Step 6: Final answer
    x = 196,501.82

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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.