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Finding the Fourth Proportional to 478,734.88, 660,646.25 and 263,894.94

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Solution

The fourth proportional to 478,734.88, 660,646.25 and 263,894.94 is: 364,170.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,734.88 : 660,646.25 = 263,894.94 : x
  2. Step 2: Convert to fraction form
    478,734.88/660,646.25 = 263,894.94/x
  3. Step 3: Cross multiply
    478,734.88x = 660,646.25 × 263,894.94
  4. Step 4: Simplify right side
    478,734.88x = 174,341,201,059.24
  5. Step 5: Solve for x
    x = 174,341,201,059.24/478,734.88
  6. Step 6: Final answer
    x = 364,170.67

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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.