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Finding the Fourth Proportional to 312,706.42, 431,535.23 and 169,466.46

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Solution

The fourth proportional to 312,706.42, 431,535.23 and 169,466.46 is: 233,863.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,706.42 : 431,535.23 = 169,466.46 : x
  2. Step 2: Convert to fraction form
    312,706.42/431,535.23 = 169,466.46/x
  3. Step 3: Cross multiply
    312,706.42x = 431,535.23 × 169,466.46
  4. Step 4: Simplify right side
    312,706.42x = 73,130,747,793.39
  5. Step 5: Solve for x
    x = 73,130,747,793.39/312,706.42
  6. Step 6: Final answer
    x = 233,863.92

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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.