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Finding the Fourth Proportional to 391,395.81, 586,908.67 and 151,622.01

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Solution

The fourth proportional to 391,395.81, 586,908.67 and 151,622.01 is: 227,361.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,395.81 : 586,908.67 = 151,622.01 : x
  2. Step 2: Convert to fraction form
    391,395.81/586,908.67 = 151,622.01/x
  3. Step 3: Cross multiply
    391,395.81x = 586,908.67 × 151,622.01
  4. Step 4: Simplify right side
    391,395.81x = 88,988,272,231.83
  5. Step 5: Solve for x
    x = 88,988,272,231.83/391,395.81
  6. Step 6: Final answer
    x = 227,361.33

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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.