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Finding the Fourth Proportional to 373,973.79, 516,015.86 and 221,037.69

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Solution

The fourth proportional to 373,973.79, 516,015.86 and 221,037.69 is: 304,991.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,973.79 : 516,015.86 = 221,037.69 : x
  2. Step 2: Convert to fraction form
    373,973.79/516,015.86 = 221,037.69/x
  3. Step 3: Cross multiply
    373,973.79x = 516,015.86 × 221,037.69
  4. Step 4: Simplify right side
    373,973.79x = 114,058,952,592.58
  5. Step 5: Solve for x
    x = 114,058,952,592.58/373,973.79
  6. Step 6: Final answer
    x = 304,991.84

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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.