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Finding the Fourth Proportional to 360,644.10, 540,310.05 and 293,721.90

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Solution

The fourth proportional to 360,644.10, 540,310.05 and 293,721.90 is: 440,048.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,644.10 : 540,310.05 = 293,721.90 : x
  2. Step 2: Convert to fraction form
    360,644.10/540,310.05 = 293,721.90/x
  3. Step 3: Cross multiply
    360,644.10x = 540,310.05 × 293,721.90
  4. Step 4: Simplify right side
    360,644.10x = 158,700,894,475.10
  5. Step 5: Solve for x
    x = 158,700,894,475.10/360,644.10
  6. Step 6: Final answer
    x = 440,048.50

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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.