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Finding the Fourth Proportional to 249,878.57, 374,817.55 and 81,398.62

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Solution

The fourth proportional to 249,878.57, 374,817.55 and 81,398.62 is: 122,097.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,878.57 : 374,817.55 = 81,398.62 : x
  2. Step 2: Convert to fraction form
    249,878.57/374,817.55 = 81,398.62/x
  3. Step 3: Cross multiply
    249,878.57x = 374,817.55 × 81,398.62
  4. Step 4: Simplify right side
    249,878.57x = 30,509,631,968.36
  5. Step 5: Solve for x
    x = 30,509,631,968.36/249,878.57
  6. Step 6: Final answer
    x = 122,097.83

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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.