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Finding the Fourth Proportional to 478,775.46, 660,709.95 and 263,919.12

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Solution

The fourth proportional to 478,775.46, 660,709.95 and 263,919.12 is: 364,208.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,775.46 : 660,709.95 = 263,919.12 : x
  2. Step 2: Convert to fraction form
    478,775.46/660,709.95 = 263,919.12/x
  3. Step 3: Cross multiply
    478,775.46x = 660,709.95 × 263,919.12
  4. Step 4: Simplify right side
    478,775.46x = 174,373,988,579.24
  5. Step 5: Solve for x
    x = 174,373,988,579.24/478,775.46
  6. Step 6: Final answer
    x = 364,208.28

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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.