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Finding the Fourth Proportional to 356,980.50, 535,634.10 and 154,638.45

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Solution

The fourth proportional to 356,980.50, 535,634.10 and 154,638.45 is: 232,028.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,980.50 : 535,634.10 = 154,638.45 : x
  2. Step 2: Convert to fraction form
    356,980.50/535,634.10 = 154,638.45/x
  3. Step 3: Cross multiply
    356,980.50x = 535,634.10 × 154,638.45
  4. Step 4: Simplify right side
    356,980.50x = 82,829,626,991.15
  5. Step 5: Solve for x
    x = 82,829,626,991.15/356,980.50
  6. Step 6: Final answer
    x = 232,028.44

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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.