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Finding the Fourth Proportional to 478,260.87, 660,029.84 and 263,400.88

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Solution

The fourth proportional to 478,260.87, 660,029.84 and 263,400.88 is: 363,509.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,260.87 : 660,029.84 = 263,400.88 : x
  2. Step 2: Convert to fraction form
    478,260.87/660,029.84 = 263,400.88/x
  3. Step 3: Cross multiply
    478,260.87x = 660,029.84 × 263,400.88
  4. Step 4: Simplify right side
    478,260.87x = 173,852,437,896.80
  5. Step 5: Solve for x
    x = 173,852,437,896.80/478,260.87
  6. Step 6: Final answer
    x = 363,509.64

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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.