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Finding the Fourth Proportional to 368,373.85, 552,652.75 and 128,491.24

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Solution

The fourth proportional to 368,373.85, 552,652.75 and 128,491.24 is: 192,768.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,373.85 : 552,652.75 = 128,491.24 : x
  2. Step 2: Convert to fraction form
    368,373.85/552,652.75 = 128,491.24/x
  3. Step 3: Cross multiply
    368,373.85x = 552,652.75 × 128,491.24
  4. Step 4: Simplify right side
    368,373.85x = 71,011,035,036.40
  5. Step 5: Solve for x
    x = 71,011,035,036.40/368,373.85
  6. Step 6: Final answer
    x = 192,768.94

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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.