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Finding the Fourth Proportional to 478,390.68, 660,179.16 and 263,530.62

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Solution

The fourth proportional to 478,390.68, 660,179.16 and 263,530.62 is: 363,672.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,390.68 : 660,179.16 = 263,530.62 : x
  2. Step 2: Convert to fraction form
    478,390.68/660,179.16 = 263,530.62/x
  3. Step 3: Cross multiply
    478,390.68x = 660,179.16 × 263,530.62
  4. Step 4: Simplify right side
    478,390.68x = 173,977,423,345.88
  5. Step 5: Solve for x
    x = 173,977,423,345.88/478,390.68
  6. Step 6: Final answer
    x = 363,672.27

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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.