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Finding the Fourth Proportional to 440,328.85, 660,493.28 and 288,113.65

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Solution

The fourth proportional to 440,328.85, 660,493.28 and 288,113.65 is: 432,170.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,328.85 : 660,493.28 = 288,113.65 : x
  2. Step 2: Convert to fraction form
    440,328.85/660,493.28 = 288,113.65/x
  3. Step 3: Cross multiply
    440,328.85x = 660,493.28 × 288,113.65
  4. Step 4: Simplify right side
    440,328.85x = 190,297,128,260.70
  5. Step 5: Solve for x
    x = 190,297,128,260.70/440,328.85
  6. Step 6: Final answer
    x = 432,170.48

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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.