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Finding the Fourth Proportional to 312,172.85, 430,798.53 and 168,932.89

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Solution

The fourth proportional to 312,172.85, 430,798.53 and 168,932.89 is: 233,127.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,172.85 : 430,798.53 = 168,932.89 : x
  2. Step 2: Convert to fraction form
    312,172.85/430,798.53 = 168,932.89/x
  3. Step 3: Cross multiply
    312,172.85x = 430,798.53 × 168,932.89
  4. Step 4: Simplify right side
    312,172.85x = 72,776,040,680.65
  5. Step 5: Solve for x
    x = 72,776,040,680.65/312,172.85
  6. Step 6: Final answer
    x = 233,127.39

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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.