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Finding the Fourth Proportional to 631,218.48, 871,087.08 and 359,303.88

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Solution

The fourth proportional to 631,218.48, 871,087.08 and 359,303.88 is: 495,842.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,218.48 : 871,087.08 = 359,303.88 : x
  2. Step 2: Convert to fraction form
    631,218.48/871,087.08 = 359,303.88/x
  3. Step 3: Cross multiply
    631,218.48x = 871,087.08 × 359,303.88
  4. Step 4: Simplify right side
    631,218.48x = 312,984,967,661.87
  5. Step 5: Solve for x
    x = 312,984,967,661.87/631,218.48
  6. Step 6: Final answer
    x = 495,842.53

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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.