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Finding the Fourth Proportional to 478,805.43, 660,756.11 and 263,953.20

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Solution

The fourth proportional to 478,805.43, 660,756.11 and 263,953.20 is: 364,257.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,805.43 : 660,756.11 = 263,953.20 : x
  2. Step 2: Convert to fraction form
    478,805.43/660,756.11 = 263,953.20/x
  3. Step 3: Cross multiply
    478,805.43x = 660,756.11 × 263,953.20
  4. Step 4: Simplify right side
    478,805.43x = 174,408,688,334.29
  5. Step 5: Solve for x
    x = 174,408,688,334.29/478,805.43
  6. Step 6: Final answer
    x = 364,257.96

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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.