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Finding the Fourth Proportional to 545,411.21, 752,665.57 and 303,696.68

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Solution

The fourth proportional to 545,411.21, 752,665.57 and 303,696.68 is: 419,100.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,411.21 : 752,665.57 = 303,696.68 : x
  2. Step 2: Convert to fraction form
    545,411.21/752,665.57 = 303,696.68/x
  3. Step 3: Cross multiply
    545,411.21x = 752,665.57 × 303,696.68
  4. Step 4: Simplify right side
    545,411.21x = 228,582,030,236.74
  5. Step 5: Solve for x
    x = 228,582,030,236.74/545,411.21
  6. Step 6: Final answer
    x = 419,100.36

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1.5x scale

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.