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Finding the Fourth Proportional to 155,279.70, 232,968.78 and 55,437.78

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Solution

The fourth proportional to 155,279.70, 232,968.78 and 55,437.78 is: 83,174.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,279.70 : 232,968.78 = 55,437.78 : x
  2. Step 2: Convert to fraction form
    155,279.70/232,968.78 = 55,437.78/x
  3. Step 3: Cross multiply
    155,279.70x = 232,968.78 × 55,437.78
  4. Step 4: Simplify right side
    155,279.70x = 12,915,271,972.51
  5. Step 5: Solve for x
    x = 12,915,271,972.51/155,279.70
  6. Step 6: Final answer
    x = 83,174.25

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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.