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Finding the Fourth Proportional to 478,378.86, 660,163.59 and 263,519.82

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Solution

The fourth proportional to 478,378.86, 660,163.59 and 263,519.82 is: 363,657.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,378.86 : 660,163.59 = 263,519.82 : x
  2. Step 2: Convert to fraction form
    478,378.86/660,163.59 = 263,519.82/x
  3. Step 3: Cross multiply
    478,378.86x = 660,163.59 × 263,519.82
  4. Step 4: Simplify right side
    478,378.86x = 173,966,190,407.35
  5. Step 5: Solve for x
    x = 173,966,190,407.35/478,378.86
  6. Step 6: Final answer
    x = 363,657.77

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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.