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Finding the Fourth Proportional to 249,687.84, 374,528 and 81,215.84

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Solution

The fourth proportional to 249,687.84, 374,528 and 81,215.84 is: 121,822.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,687.84 : 374,528 = 81,215.84 : x
  2. Step 2: Convert to fraction form
    249,687.84/374,528 = 81,215.84/x
  3. Step 3: Cross multiply
    249,687.84x = 374,528 × 81,215.84
  4. Step 4: Simplify right side
    249,687.84x = 30,417,606,123.52
  5. Step 5: Solve for x
    x = 30,417,606,123.52/249,687.84
  6. Step 6: Final answer
    x = 121,822.54

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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.