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Finding the Fourth Proportional to 545,322.28, 752,491.14 and 318,923.56

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Solution

The fourth proportional to 545,322.28, 752,491.14 and 318,923.56 is: 440,083.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,322.28 : 752,491.14 = 318,923.56 : x
  2. Step 2: Convert to fraction form
    545,322.28/752,491.14 = 318,923.56/x
  3. Step 3: Cross multiply
    545,322.28x = 752,491.14 × 318,923.56
  4. Step 4: Simplify right side
    545,322.28x = 239,987,153,237.26
  5. Step 5: Solve for x
    x = 239,987,153,237.26/545,322.28
  6. Step 6: Final answer
    x = 440,083.16

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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.