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Finding the Fourth Proportional to 249,885.58, 374,828.04 and 81,405.61

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Solution

The fourth proportional to 249,885.58, 374,828.04 and 81,405.61 is: 122,108.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,885.58 : 374,828.04 = 81,405.61 : x
  2. Step 2: Convert to fraction form
    249,885.58/374,828.04 = 81,405.61/x
  3. Step 3: Cross multiply
    249,885.58x = 374,828.04 × 81,405.61
  4. Step 4: Simplify right side
    249,885.58x = 30,513,105,241.30
  5. Step 5: Solve for x
    x = 30,513,105,241.30/249,885.58
  6. Step 6: Final answer
    x = 122,108.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.