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Finding the Fourth Proportional to 249,885.85, 374,828.49 and 81,405.92

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Solution

The fourth proportional to 249,885.85, 374,828.49 and 81,405.92 is: 122,108.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,885.85 : 374,828.49 = 81,405.92 : x
  2. Step 2: Convert to fraction form
    249,885.85/374,828.49 = 81,405.92/x
  3. Step 3: Cross multiply
    249,885.85x = 374,828.49 × 81,405.92
  4. Step 4: Simplify right side
    249,885.85x = 30,513,258,070.66
  5. Step 5: Solve for x
    x = 30,513,258,070.66/249,885.85
  6. Step 6: Final answer
    x = 122,108.79

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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.