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Finding the Fourth Proportional to 243,303.75, 335,759.18 and 134,407.55

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Solution

The fourth proportional to 243,303.75, 335,759.18 and 134,407.55 is: 185,482.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,303.75 : 335,759.18 = 134,407.55 : x
  2. Step 2: Convert to fraction form
    243,303.75/335,759.18 = 134,407.55/x
  3. Step 3: Cross multiply
    243,303.75x = 335,759.18 × 134,407.55
  4. Step 4: Simplify right side
    243,303.75x = 45,128,568,941.17
  5. Step 5: Solve for x
    x = 45,128,568,941.17/243,303.75
  6. Step 6: Final answer
    x = 185,482.42

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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.