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Finding the Fourth Proportional to 242,763.12, 335,014.56 and 135,340

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Solution

The fourth proportional to 242,763.12, 335,014.56 and 135,340 is: 186,770.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,763.12 : 335,014.56 = 135,340 : x
  2. Step 2: Convert to fraction form
    242,763.12/335,014.56 = 135,340/x
  3. Step 3: Cross multiply
    242,763.12x = 335,014.56 × 135,340
  4. Step 4: Simplify right side
    242,763.12x = 45,340,870,550.40
  5. Step 5: Solve for x
    x = 45,340,870,550.40/242,763.12
  6. Step 6: Final answer
    x = 186,770.01

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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.