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Finding the Fourth Proportional to 545,112.64, 752,247.89 and 303,395.29

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Solution

The fourth proportional to 545,112.64, 752,247.89 and 303,395.29 is: 418,681.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,112.64 : 752,247.89 = 303,395.29 : x
  2. Step 2: Convert to fraction form
    545,112.64/752,247.89 = 303,395.29/x
  3. Step 3: Cross multiply
    545,112.64x = 752,247.89 × 303,395.29
  4. Step 4: Simplify right side
    545,112.64x = 228,228,466,185.17
  5. Step 5: Solve for x
    x = 228,228,466,185.17/545,112.64
  6. Step 6: Final answer
    x = 418,681.30

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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.