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Finding the Fourth Proportional to 478,583.11, 660,449.12 and 263,730.86

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Solution

The fourth proportional to 478,583.11, 660,449.12 and 263,730.86 is: 363,951.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,583.11 : 660,449.12 = 263,730.86 : x
  2. Step 2: Convert to fraction form
    478,583.11/660,449.12 = 263,730.86/x
  3. Step 3: Cross multiply
    478,583.11x = 660,449.12 × 263,730.86
  4. Step 4: Simplify right side
    478,583.11x = 174,180,814,403.84
  5. Step 5: Solve for x
    x = 174,180,814,403.84/478,583.11
  6. Step 6: Final answer
    x = 363,951.03

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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.