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Finding the Fourth Proportional to 545,711.22, 753,032.63 and 303,988.61

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Solution

The fourth proportional to 545,711.22, 753,032.63 and 303,988.61 is: 419,477.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,711.22 : 753,032.63 = 303,988.61 : x
  2. Step 2: Convert to fraction form
    545,711.22/753,032.63 = 303,988.61/x
  3. Step 3: Cross multiply
    545,711.22x = 753,032.63 × 303,988.61
  4. Step 4: Simplify right side
    545,711.22x = 228,913,345,120.90
  5. Step 5: Solve for x
    x = 228,913,345,120.90/545,711.22
  6. Step 6: Final answer
    x = 419,477.07

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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.