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Finding the Fourth Proportional to 249,886.85, 374,829.99 and 81,406.92

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Solution

The fourth proportional to 249,886.85, 374,829.99 and 81,406.92 is: 122,110.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,886.85 : 374,829.99 = 81,406.92 : x
  2. Step 2: Convert to fraction form
    249,886.85/374,829.99 = 81,406.92/x
  3. Step 3: Cross multiply
    249,886.85x = 374,829.99 × 81,406.92
  4. Step 4: Simplify right side
    249,886.85x = 30,513,755,009.53
  5. Step 5: Solve for x
    x = 30,513,755,009.53/249,886.85
  6. Step 6: Final answer
    x = 122,110.29

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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.