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Finding the Fourth Proportional to 339,957.20, 510,008.70 and 103,323.80

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Solution

The fourth proportional to 339,957.20, 510,008.70 and 103,323.80 is: 155,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,957.20 : 510,008.70 = 103,323.80 : x
  2. Step 2: Convert to fraction form
    339,957.20/510,008.70 = 103,323.80/x
  3. Step 3: Cross multiply
    339,957.20x = 510,008.70 × 103,323.80
  4. Step 4: Simplify right side
    339,957.20x = 52,696,036,917.06
  5. Step 5: Solve for x
    x = 52,696,036,917.06/339,957.20
  6. Step 6: Final answer
    x = 155,007.86

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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.