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Finding the Fourth Proportional to 485,441.17, 728,162.27 and 262,220.92

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Solution

The fourth proportional to 485,441.17, 728,162.27 and 262,220.92 is: 393,331.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,441.17 : 728,162.27 = 262,220.92 : x
  2. Step 2: Convert to fraction form
    485,441.17/728,162.27 = 262,220.92/x
  3. Step 3: Cross multiply
    485,441.17x = 728,162.27 × 262,220.92
  4. Step 4: Simplify right side
    485,441.17x = 190,939,381,004.24
  5. Step 5: Solve for x
    x = 190,939,381,004.24/485,441.17
  6. Step 6: Final answer
    x = 393,331.66

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Double scale
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Similar ratio
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1.5x scale

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.