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Finding the Fourth Proportional to 478,535.80, 660,408.88 and 263,675.80

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Solution

The fourth proportional to 478,535.80, 660,408.88 and 263,675.80 is: 363,888.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,535.80 : 660,408.88 = 263,675.80 : x
  2. Step 2: Convert to fraction form
    478,535.80/660,408.88 = 263,675.80/x
  3. Step 3: Cross multiply
    478,535.80x = 660,408.88 × 263,675.80
  4. Step 4: Simplify right side
    478,535.80x = 174,133,839,761.10
  5. Step 5: Solve for x
    x = 174,133,839,761.10/478,535.80
  6. Step 6: Final answer
    x = 363,888.85

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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.