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Finding the Fourth Proportional to 312,148.82, 430,766.53 and 168,908.87

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Solution

The fourth proportional to 312,148.82, 430,766.53 and 168,908.87 is: 233,094.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,148.82 : 430,766.53 = 168,908.87 : x
  2. Step 2: Convert to fraction form
    312,148.82/430,766.53 = 168,908.87/x
  3. Step 3: Cross multiply
    312,148.82x = 430,766.53 × 168,908.87
  4. Step 4: Simplify right side
    312,148.82x = 72,760,288,470.77
  5. Step 5: Solve for x
    x = 72,760,288,470.77/312,148.82
  6. Step 6: Final answer
    x = 233,094.87

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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.