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Finding the Fourth Proportional to 312,020.20, 468,030.30 and 170,302.60

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Solution

The fourth proportional to 312,020.20, 468,030.30 and 170,302.60 is: 255,453.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,020.20 : 468,030.30 = 170,302.60 : x
  2. Step 2: Convert to fraction form
    312,020.20/468,030.30 = 170,302.60/x
  3. Step 3: Cross multiply
    312,020.20x = 468,030.30 × 170,302.60
  4. Step 4: Simplify right side
    312,020.20x = 79,706,776,968.78
  5. Step 5: Solve for x
    x = 79,706,776,968.78/312,020.20
  6. Step 6: Final answer
    x = 255,453.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.