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Finding the Fourth Proportional to 249,710.58, 374,390.91 and 91,918.53

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Solution

The fourth proportional to 249,710.58, 374,390.91 and 91,918.53 is: 137,813.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,710.58 : 374,390.91 = 91,918.53 : x
  2. Step 2: Convert to fraction form
    249,710.58/374,390.91 = 91,918.53/x
  3. Step 3: Cross multiply
    249,710.58x = 374,390.91 × 91,918.53
  4. Step 4: Simplify right side
    249,710.58x = 34,413,462,092.56
  5. Step 5: Solve for x
    x = 34,413,462,092.56/249,710.58
  6. Step 6: Final answer
    x = 137,813.39

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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.