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Finding the Fourth Proportional to 478,243.85, 659,968.47 and 263,403.92

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Solution

The fourth proportional to 478,243.85, 659,968.47 and 263,403.92 is: 363,492.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,243.85 : 659,968.47 = 263,403.92 : x
  2. Step 2: Convert to fraction form
    478,243.85/659,968.47 = 263,403.92/x
  3. Step 3: Cross multiply
    478,243.85x = 659,968.47 × 263,403.92
  4. Step 4: Simplify right side
    478,243.85x = 173,838,282,074.40
  5. Step 5: Solve for x
    x = 173,838,282,074.40/478,243.85
  6. Step 6: Final answer
    x = 363,492.98

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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.