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Finding the Fourth Proportional to 478,388.13, 660,168.52 and 263,528.34

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Solution

The fourth proportional to 478,388.13, 660,168.52 and 263,528.34 is: 363,665.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,388.13 : 660,168.52 = 263,528.34 : x
  2. Step 2: Convert to fraction form
    478,388.13/660,168.52 = 263,528.34/x
  3. Step 3: Cross multiply
    478,388.13x = 660,168.52 × 263,528.34
  4. Step 4: Simplify right side
    478,388.13x = 173,973,114,195.86
  5. Step 5: Solve for x
    x = 173,973,114,195.86/478,388.13
  6. Step 6: Final answer
    x = 363,665.20

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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.