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Finding the Fourth Proportional to 275,787.70, 380,587.05 and 153,280.06

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Solution

The fourth proportional to 275,787.70, 380,587.05 and 153,280.06 is: 211,526.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,787.70 : 380,587.05 = 153,280.06 : x
  2. Step 2: Convert to fraction form
    275,787.70/380,587.05 = 153,280.06/x
  3. Step 3: Cross multiply
    275,787.70x = 380,587.05 × 153,280.06
  4. Step 4: Simplify right side
    275,787.70x = 58,336,405,859.22
  5. Step 5: Solve for x
    x = 58,336,405,859.22/275,787.70
  6. Step 6: Final answer
    x = 211,526.50

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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.