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Finding the Fourth Proportional to 340,695.63, 511,045.42 and 87,958.86

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Solution

The fourth proportional to 340,695.63, 511,045.42 and 87,958.86 is: 131,938.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,695.63 : 511,045.42 = 87,958.86 : x
  2. Step 2: Convert to fraction form
    340,695.63/511,045.42 = 87,958.86/x
  3. Step 3: Cross multiply
    340,695.63x = 511,045.42 × 87,958.86
  4. Step 4: Simplify right side
    340,695.63x = 44,950,972,551.42
  5. Step 5: Solve for x
    x = 44,950,972,551.42/340,695.63
  6. Step 6: Final answer
    x = 131,938.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.