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Finding the Fourth Proportional to 249,895.80, 374,843.43 and 81,415.94

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Solution

The fourth proportional to 249,895.80, 374,843.43 and 81,415.94 is: 122,123.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,895.80 : 374,843.43 = 81,415.94 : x
  2. Step 2: Convert to fraction form
    249,895.80/374,843.43 = 81,415.94/x
  3. Step 3: Cross multiply
    249,895.80x = 374,843.43 × 81,415.94
  4. Step 4: Simplify right side
    249,895.80x = 30,518,228,332.06
  5. Step 5: Solve for x
    x = 30,518,228,332.06/249,895.80
  6. Step 6: Final answer
    x = 122,123.81

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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.