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Finding the Fourth Proportional to 492,495.06, 679,643.16 and 266,140.56

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Solution

The fourth proportional to 492,495.06, 679,643.16 and 266,140.56 is: 367,273.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,495.06 : 679,643.16 = 266,140.56 : x
  2. Step 2: Convert to fraction form
    492,495.06/679,643.16 = 266,140.56/x
  3. Step 3: Cross multiply
    492,495.06x = 679,643.16 × 266,140.56
  4. Step 4: Simplify right side
    492,495.06x = 180,880,611,202.57
  5. Step 5: Solve for x
    x = 180,880,611,202.57/492,495.06
  6. Step 6: Final answer
    x = 367,273.96

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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.