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Finding the Fourth Proportional to 478,671.88, 660,540.26 and 263,811.28

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Solution

The fourth proportional to 478,671.88, 660,540.26 and 263,811.28 is: 364,044.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,671.88 : 660,540.26 = 263,811.28 : x
  2. Step 2: Convert to fraction form
    478,671.88/660,540.26 = 263,811.28/x
  3. Step 3: Cross multiply
    478,671.88x = 660,540.26 × 263,811.28
  4. Step 4: Simplify right side
    478,671.88x = 174,257,971,482.13
  5. Step 5: Solve for x
    x = 174,257,971,482.13/478,671.88
  6. Step 6: Final answer
    x = 364,044.72

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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.