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Finding the Fourth Proportional to 344,285.70, 516,428.55 and 154,672.80

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Solution

The fourth proportional to 344,285.70, 516,428.55 and 154,672.80 is: 232,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,285.70 : 516,428.55 = 154,672.80 : x
  2. Step 2: Convert to fraction form
    344,285.70/516,428.55 = 154,672.80/x
  3. Step 3: Cross multiply
    344,285.70x = 516,428.55 × 154,672.80
  4. Step 4: Simplify right side
    344,285.70x = 79,877,449,828.44
  5. Step 5: Solve for x
    x = 79,877,449,828.44/344,285.70
  6. Step 6: Final answer
    x = 232,009.20

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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.