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Finding the Fourth Proportional to 348,699.88, 479,695.78 and 305,484.76

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Solution

The fourth proportional to 348,699.88, 479,695.78 and 305,484.76 is: 420,246.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,699.88 : 479,695.78 = 305,484.76 : x
  2. Step 2: Convert to fraction form
    348,699.88/479,695.78 = 305,484.76/x
  3. Step 3: Cross multiply
    348,699.88x = 479,695.78 × 305,484.76
  4. Step 4: Simplify right side
    348,699.88x = 146,539,750,226.31
  5. Step 5: Solve for x
    x = 146,539,750,226.31/348,699.88
  6. Step 6: Final answer
    x = 420,246.06

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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.