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Finding the Fourth Proportional to 312,092.76, 430,567.74 and 216,551.64

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Solution

The fourth proportional to 312,092.76, 430,567.74 and 216,551.64 is: 298,757.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,092.76 : 430,567.74 = 216,551.64 : x
  2. Step 2: Convert to fraction form
    312,092.76/430,567.74 = 216,551.64/x
  3. Step 3: Cross multiply
    312,092.76x = 430,567.74 × 216,551.64
  4. Step 4: Simplify right side
    312,092.76x = 93,240,150,228.09
  5. Step 5: Solve for x
    x = 93,240,150,228.09/312,092.76
  6. Step 6: Final answer
    x = 298,757.81

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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.