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Finding the Fourth Proportional to 478,341.56, 660,087 and 263,477

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Solution

The fourth proportional to 478,341.56, 660,087 and 263,477 is: 363,584.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,341.56 : 660,087 = 263,477 : x
  2. Step 2: Convert to fraction form
    478,341.56/660,087 = 263,477/x
  3. Step 3: Cross multiply
    478,341.56x = 660,087 × 263,477
  4. Step 4: Simplify right side
    478,341.56x = 173,917,742,499
  5. Step 5: Solve for x
    x = 173,917,742,499/478,341.56
  6. Step 6: Final answer
    x = 363,584.85

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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.