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Finding the Fourth Proportional to 421,218.06, 631,937.88 and 151,373.46

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Solution

The fourth proportional to 421,218.06, 631,937.88 and 151,373.46 is: 227,100.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,218.06 : 631,937.88 = 151,373.46 : x
  2. Step 2: Convert to fraction form
    421,218.06/631,937.88 = 151,373.46/x
  3. Step 3: Cross multiply
    421,218.06x = 631,937.88 × 151,373.46
  4. Step 4: Simplify right side
    421,218.06x = 95,658,623,400.66
  5. Step 5: Solve for x
    x = 95,658,623,400.66/421,218.06
  6. Step 6: Final answer
    x = 227,100.00

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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.