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Finding the Fourth Proportional to 478,765.74, 660,696.12 and 263,909.39

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Solution

The fourth proportional to 478,765.74, 660,696.12 and 263,909.39 is: 364,194.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,765.74 : 660,696.12 = 263,909.39 : x
  2. Step 2: Convert to fraction form
    478,765.74/660,696.12 = 263,909.39/x
  3. Step 3: Cross multiply
    478,765.74x = 660,696.12 × 263,909.39
  4. Step 4: Simplify right side
    478,765.74x = 174,363,909,675.26
  5. Step 5: Solve for x
    x = 174,363,909,675.26/478,765.74
  6. Step 6: Final answer
    x = 364,194.63

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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.