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Finding the Fourth Proportional to 243,171.84, 335,312.64 and 158,131.20

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Solution

The fourth proportional to 243,171.84, 335,312.64 and 158,131.20 is: 218,049.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,171.84 : 335,312.64 = 158,131.20 : x
  2. Step 2: Convert to fraction form
    243,171.84/335,312.64 = 158,131.20/x
  3. Step 3: Cross multiply
    243,171.84x = 335,312.64 × 158,131.20
  4. Step 4: Simplify right side
    243,171.84x = 53,023,390,138.37
  5. Step 5: Solve for x
    x = 53,023,390,138.37/243,171.84
  6. Step 6: Final answer
    x = 218,049.06

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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.