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Finding the Fourth Proportional to 255,081.80, 382,294.65 and 155,135.90

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Solution

The fourth proportional to 255,081.80, 382,294.65 and 155,135.90 is: 232,504.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,081.80 : 382,294.65 = 155,135.90 : x
  2. Step 2: Convert to fraction form
    255,081.80/382,294.65 = 155,135.90/x
  3. Step 3: Cross multiply
    255,081.80x = 382,294.65 × 155,135.90
  4. Step 4: Simplify right side
    255,081.80x = 59,307,624,592.94
  5. Step 5: Solve for x
    x = 59,307,624,592.94/255,081.80
  6. Step 6: Final answer
    x = 232,504.34

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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.