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Finding the Fourth Proportional to 486,670.40, 730,005.56 and 154,246.40

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Solution

The fourth proportional to 486,670.40, 730,005.56 and 154,246.40 is: 231,369.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,670.40 : 730,005.56 = 154,246.40 : x
  2. Step 2: Convert to fraction form
    486,670.40/730,005.56 = 154,246.40/x
  3. Step 3: Cross multiply
    486,670.40x = 730,005.56 × 154,246.40
  4. Step 4: Simplify right side
    486,670.40x = 112,600,729,609.98
  5. Step 5: Solve for x
    x = 112,600,729,609.98/486,670.40
  6. Step 6: Final answer
    x = 231,369.59

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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.