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Finding the Fourth Proportional to 374,603.40, 516,910.26 and 221,646.28

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Solution

The fourth proportional to 374,603.40, 516,910.26 and 221,646.28 is: 305,846.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,603.40 : 516,910.26 = 221,646.28 : x
  2. Step 2: Convert to fraction form
    374,603.40/516,910.26 = 221,646.28/x
  3. Step 3: Cross multiply
    374,603.40x = 516,910.26 × 221,646.28
  4. Step 4: Simplify right side
    374,603.40x = 114,571,236,222.83
  5. Step 5: Solve for x
    x = 114,571,236,222.83/374,603.40
  6. Step 6: Final answer
    x = 305,846.76

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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.