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Finding the Fourth Proportional to 275,567.67, 380,280.15 and 154,705.95

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Solution

The fourth proportional to 275,567.67, 380,280.15 and 154,705.95 is: 213,492.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,567.67 : 380,280.15 = 154,705.95 : x
  2. Step 2: Convert to fraction form
    275,567.67/380,280.15 = 154,705.95/x
  3. Step 3: Cross multiply
    275,567.67x = 380,280.15 × 154,705.95
  4. Step 4: Simplify right side
    275,567.67x = 58,831,601,871.89
  5. Step 5: Solve for x
    x = 58,831,601,871.89/275,567.67
  6. Step 6: Final answer
    x = 213,492.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.