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Finding the Fourth Proportional to 561,143.70, 841,718.79 and 187,165.62

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Solution

The fourth proportional to 561,143.70, 841,718.79 and 187,165.62 is: 280,749.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,143.70 : 841,718.79 = 187,165.62 : x
  2. Step 2: Convert to fraction form
    561,143.70/841,718.79 = 187,165.62/x
  3. Step 3: Cross multiply
    561,143.70x = 841,718.79 × 187,165.62
  4. Step 4: Simplify right side
    561,143.70x = 157,540,819,196.00
  5. Step 5: Solve for x
    x = 157,540,819,196.00/561,143.70
  6. Step 6: Final answer
    x = 280,749.51

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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.