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Finding the Fourth Proportional to 421,060, 631,901.04 and 199,444

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Solution

The fourth proportional to 421,060, 631,901.04 and 199,444 is: 299,313.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,060 : 631,901.04 = 199,444 : x
  2. Step 2: Convert to fraction form
    421,060/631,901.04 = 199,444/x
  3. Step 3: Cross multiply
    421,060x = 631,901.04 × 199,444
  4. Step 4: Simplify right side
    421,060x = 126,028,871,021.76
  5. Step 5: Solve for x
    x = 126,028,871,021.76/421,060
  6. Step 6: Final answer
    x = 299,313.33

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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.