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Finding the Fourth Proportional to 478,615.14, 660,493.26 and 263,762.88

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Solution

The fourth proportional to 478,615.14, 660,493.26 and 263,762.88 is: 363,995.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,615.14 : 660,493.26 = 263,762.88 : x
  2. Step 2: Convert to fraction form
    478,615.14/660,493.26 = 263,762.88/x
  3. Step 3: Cross multiply
    478,615.14x = 660,493.26 × 263,762.88
  4. Step 4: Simplify right side
    478,615.14x = 174,213,604,478.19
  5. Step 5: Solve for x
    x = 174,213,604,478.19/478,615.14
  6. Step 6: Final answer
    x = 363,995.18

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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.