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Finding the Fourth Proportional to 242,690.82, 334,923.72 and 135,260.88

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Solution

The fourth proportional to 242,690.82, 334,923.72 and 135,260.88 is: 186,665.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,690.82 : 334,923.72 = 135,260.88 : x
  2. Step 2: Convert to fraction form
    242,690.82/334,923.72 = 135,260.88/x
  3. Step 3: Cross multiply
    242,690.82x = 334,923.72 × 135,260.88
  4. Step 4: Simplify right side
    242,690.82x = 45,302,077,100.07
  5. Step 5: Solve for x
    x = 45,302,077,100.07/242,690.82
  6. Step 6: Final answer
    x = 186,665.80

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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.