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Finding the Fourth Proportional to 631,343.12, 871,253.47 and 340,954.65

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Solution

The fourth proportional to 631,343.12, 871,253.47 and 340,954.65 is: 470,517.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,343.12 : 871,253.47 = 340,954.65 : x
  2. Step 2: Convert to fraction form
    631,343.12/871,253.47 = 340,954.65/x
  3. Step 3: Cross multiply
    631,343.12x = 871,253.47 × 340,954.65
  4. Step 4: Simplify right side
    631,343.12x = 297,057,922,271.26
  5. Step 5: Solve for x
    x = 297,057,922,271.26/631,343.12
  6. Step 6: Final answer
    x = 470,517.40

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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.