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Finding the Fourth Proportional to 275,276.31, 379,880.69 and 152,787.45

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Solution

The fourth proportional to 275,276.31, 379,880.69 and 152,787.45 is: 210,846.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,276.31 : 379,880.69 = 152,787.45 : x
  2. Step 2: Convert to fraction form
    275,276.31/379,880.69 = 152,787.45/x
  3. Step 3: Cross multiply
    275,276.31x = 379,880.69 × 152,787.45
  4. Step 4: Simplify right side
    275,276.31x = 58,041,001,165.40
  5. Step 5: Solve for x
    x = 58,041,001,165.40/275,276.31
  6. Step 6: Final answer
    x = 210,846.34

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1.5x scale

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.