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Finding the Fourth Proportional to 261,667.98, 361,148.94 and 154,231.74

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Solution

The fourth proportional to 261,667.98, 361,148.94 and 154,231.74 is: 212,867.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,667.98 : 361,148.94 = 154,231.74 : x
  2. Step 2: Convert to fraction form
    261,667.98/361,148.94 = 154,231.74/x
  3. Step 3: Cross multiply
    261,667.98x = 361,148.94 × 154,231.74
  4. Step 4: Simplify right side
    261,667.98x = 55,700,629,415.36
  5. Step 5: Solve for x
    x = 55,700,629,415.36/261,667.98
  6. Step 6: Final answer
    x = 212,867.58

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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.