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Finding the Fourth Proportional to 545,649.32, 753,019.30 and 303,932.00

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Solution

The fourth proportional to 545,649.32, 753,019.30 and 303,932.00 is: 419,439.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,649.32 : 753,019.30 = 303,932.00 : x
  2. Step 2: Convert to fraction form
    545,649.32/753,019.30 = 303,932.00/x
  3. Step 3: Cross multiply
    545,649.32x = 753,019.30 × 303,932.00
  4. Step 4: Simplify right side
    545,649.32x = 228,866,663,397.33
  5. Step 5: Solve for x
    x = 228,866,663,397.33/545,649.32
  6. Step 6: Final answer
    x = 419,439.10

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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.