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Finding the Fourth Proportional to 492,673.12, 679,888.56 and 266,318.64

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Solution

The fourth proportional to 492,673.12, 679,888.56 and 266,318.64 is: 367,519.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,673.12 : 679,888.56 = 266,318.64 : x
  2. Step 2: Convert to fraction form
    492,673.12/679,888.56 = 266,318.64/x
  3. Step 3: Cross multiply
    492,673.12x = 679,888.56 × 266,318.64
  4. Step 4: Simplify right side
    492,673.12x = 181,066,996,650.76
  5. Step 5: Solve for x
    x = 181,066,996,650.76/492,673.12
  6. Step 6: Final answer
    x = 367,519.54

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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.