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Finding the Fourth Proportional to 313,490.88, 432,644.40 and 177,548.85

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Solution

The fourth proportional to 313,490.88, 432,644.40 and 177,548.85 is: 245,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,490.88 : 432,644.40 = 177,548.85 : x
  2. Step 2: Convert to fraction form
    313,490.88/432,644.40 = 177,548.85/x
  3. Step 3: Cross multiply
    313,490.88x = 432,644.40 × 177,548.85
  4. Step 4: Simplify right side
    313,490.88x = 76,815,515,678.94
  5. Step 5: Solve for x
    x = 76,815,515,678.94/313,490.88
  6. Step 6: Final answer
    x = 245,032.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.