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Finding the Fourth Proportional to 305,156.91, 457,672.79 and 115,551.89

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Solution

The fourth proportional to 305,156.91, 457,672.79 and 115,551.89 is: 173,304.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,156.91 : 457,672.79 = 115,551.89 : x
  2. Step 2: Convert to fraction form
    305,156.91/457,672.79 = 115,551.89/x
  3. Step 3: Cross multiply
    305,156.91x = 457,672.79 × 115,551.89
  4. Step 4: Simplify right side
    305,156.91x = 52,884,953,597.71
  5. Step 5: Solve for x
    x = 52,884,953,597.71/305,156.91
  6. Step 6: Final answer
    x = 173,304.13

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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.