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Finding the Fourth Proportional to 389,443.64, 537,448.56 and 219,677.72

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Solution

The fourth proportional to 389,443.64, 537,448.56 and 219,677.72 is: 303,164.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,443.64 : 537,448.56 = 219,677.72 : x
  2. Step 2: Convert to fraction form
    389,443.64/537,448.56 = 219,677.72/x
  3. Step 3: Cross multiply
    389,443.64x = 537,448.56 × 219,677.72
  4. Step 4: Simplify right side
    389,443.64x = 118,065,474,278.08
  5. Step 5: Solve for x
    x = 118,065,474,278.08/389,443.64
  6. Step 6: Final answer
    x = 303,164.47

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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.