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Finding the Fourth Proportional to 312,270.42, 430,934.25 and 169,030.42

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Solution

The fourth proportional to 312,270.42, 430,934.25 and 169,030.42 is: 233,262.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,270.42 : 430,934.25 = 169,030.42 : x
  2. Step 2: Convert to fraction form
    312,270.42/430,934.25 = 169,030.42/x
  3. Step 3: Cross multiply
    312,270.42x = 430,934.25 × 169,030.42
  4. Step 4: Simplify right side
    312,270.42x = 72,840,997,269.89
  5. Step 5: Solve for x
    x = 72,840,997,269.89/312,270.42
  6. Step 6: Final answer
    x = 233,262.56

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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.