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Finding the Fourth Proportional to 540,278.89, 745,613.57 and 310,871.03

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Solution

The fourth proportional to 540,278.89, 745,613.57 and 310,871.03 is: 429,018.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,278.89 : 745,613.57 = 310,871.03 : x
  2. Step 2: Convert to fraction form
    540,278.89/745,613.57 = 310,871.03/x
  3. Step 3: Cross multiply
    540,278.89x = 745,613.57 × 310,871.03
  4. Step 4: Simplify right side
    540,278.89x = 231,789,658,797.56
  5. Step 5: Solve for x
    x = 231,789,658,797.56/540,278.89
  6. Step 6: Final answer
    x = 429,018.54

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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.