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Finding the Fourth Proportional to 545,703.70, 753,093.80 and 303,986.21

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Solution

The fourth proportional to 545,703.70, 753,093.80 and 303,986.21 is: 419,513.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,703.70 : 753,093.80 = 303,986.21 : x
  2. Step 2: Convert to fraction form
    545,703.70/753,093.80 = 303,986.21/x
  3. Step 3: Cross multiply
    545,703.70x = 753,093.80 × 303,986.21
  4. Step 4: Simplify right side
    545,703.70x = 228,930,130,036.50
  5. Step 5: Solve for x
    x = 228,930,130,036.50/545,703.70
  6. Step 6: Final answer
    x = 419,513.61

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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.