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Finding the Fourth Proportional to 478,765.23, 660,695.87 and 263,908.89

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Solution

The fourth proportional to 478,765.23, 660,695.87 and 263,908.89 is: 364,194.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,765.23 : 660,695.87 = 263,908.89 : x
  2. Step 2: Convert to fraction form
    478,765.23/660,695.87 = 263,908.89/x
  3. Step 3: Cross multiply
    478,765.23x = 660,695.87 × 263,908.89
  4. Step 4: Simplify right side
    478,765.23x = 174,363,512,359.74
  5. Step 5: Solve for x
    x = 174,363,512,359.74/478,765.23
  6. Step 6: Final answer
    x = 364,194.18

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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.