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Finding the Fourth Proportional to 368,861.45, 553,366.75 and 155,629.88

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Solution

The fourth proportional to 368,861.45, 553,366.75 and 155,629.88 is: 233,476.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,861.45 : 553,366.75 = 155,629.88 : x
  2. Step 2: Convert to fraction form
    368,861.45/553,366.75 = 155,629.88/x
  3. Step 3: Cross multiply
    368,861.45x = 553,366.75 × 155,629.88
  4. Step 4: Simplify right side
    368,861.45x = 86,120,400,898.49
  5. Step 5: Solve for x
    x = 86,120,400,898.49/368,861.45
  6. Step 6: Final answer
    x = 233,476.29

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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.