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Finding the Fourth Proportional to 645,034.80, 967,187.70 and 245,688.60

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Solution

The fourth proportional to 645,034.80, 967,187.70 and 245,688.60 is: 368,394.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,034.80 : 967,187.70 = 245,688.60 : x
  2. Step 2: Convert to fraction form
    645,034.80/967,187.70 = 245,688.60/x
  3. Step 3: Cross multiply
    645,034.80x = 967,187.70 × 245,688.60
  4. Step 4: Simplify right side
    645,034.80x = 237,626,991,950.22
  5. Step 5: Solve for x
    x = 237,626,991,950.22/645,034.80
  6. Step 6: Final answer
    x = 368,394.06

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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.