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Finding the Fourth Proportional to 478,217.13, 659,913.30 and 263,315.22

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Solution

The fourth proportional to 478,217.13, 659,913.30 and 263,315.22 is: 363,360.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,217.13 : 659,913.30 = 263,315.22 : x
  2. Step 2: Convert to fraction form
    478,217.13/659,913.30 = 263,315.22/x
  3. Step 3: Cross multiply
    478,217.13x = 659,913.30 × 263,315.22
  4. Step 4: Simplify right side
    478,217.13x = 173,765,215,770.43
  5. Step 5: Solve for x
    x = 173,765,215,770.43/478,217.13
  6. Step 6: Final answer
    x = 363,360.50

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1.5x scale

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.