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Finding the Fourth Proportional to 279,516.63, 385,737.63 and 158,661.65

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Solution

The fourth proportional to 279,516.63, 385,737.63 and 158,661.65 is: 218,955.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,516.63 : 385,737.63 = 158,661.65 : x
  2. Step 2: Convert to fraction form
    279,516.63/385,737.63 = 158,661.65/x
  3. Step 3: Cross multiply
    279,516.63x = 385,737.63 × 158,661.65
  4. Step 4: Simplify right side
    279,516.63x = 61,201,768,842.89
  5. Step 5: Solve for x
    x = 61,201,768,842.89/279,516.63
  6. Step 6: Final answer
    x = 218,955.73

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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.