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Finding the Fourth Proportional to 189,484.40, 261,487.20 and 104,601.44

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Solution

The fourth proportional to 189,484.40, 261,487.20 and 104,601.44 is: 144,349.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,484.40 : 261,487.20 = 104,601.44 : x
  2. Step 2: Convert to fraction form
    189,484.40/261,487.20 = 104,601.44/x
  3. Step 3: Cross multiply
    189,484.40x = 261,487.20 × 104,601.44
  4. Step 4: Simplify right side
    189,484.40x = 27,351,937,661.57
  5. Step 5: Solve for x
    x = 27,351,937,661.57/189,484.40
  6. Step 6: Final answer
    x = 144,349.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.