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Finding the Fourth Proportional to 305,000.85, 457,501.28 and 94,660.05

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Solution

The fourth proportional to 305,000.85, 457,501.28 and 94,660.05 is: 141,990.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,000.85 : 457,501.28 = 94,660.05 : x
  2. Step 2: Convert to fraction form
    305,000.85/457,501.28 = 94,660.05/x
  3. Step 3: Cross multiply
    305,000.85x = 457,501.28 × 94,660.05
  4. Step 4: Simplify right side
    305,000.85x = 43,307,093,566.56
  5. Step 5: Solve for x
    x = 43,307,093,566.56/305,000.85
  6. Step 6: Final answer
    x = 141,990.08

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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.