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Finding the Fourth Proportional to 260,234.72, 390,086.21 and 147,677.21

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Solution

The fourth proportional to 260,234.72, 390,086.21 and 147,677.21 is: 221,364.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,234.72 : 390,086.21 = 147,677.21 : x
  2. Step 2: Convert to fraction form
    260,234.72/390,086.21 = 147,677.21/x
  3. Step 3: Cross multiply
    260,234.72x = 390,086.21 × 147,677.21
  4. Step 4: Simplify right side
    260,234.72x = 57,606,841,571.04
  5. Step 5: Solve for x
    x = 57,606,841,571.04/260,234.72
  6. Step 6: Final answer
    x = 221,364.94

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1.5x scale

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.