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Finding the Fourth Proportional to 390,873.66, 586,396.53 and 222,473.22

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Solution

The fourth proportional to 390,873.66, 586,396.53 and 222,473.22 is: 333,758.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,873.66 : 586,396.53 = 222,473.22 : x
  2. Step 2: Convert to fraction form
    390,873.66/586,396.53 = 222,473.22/x
  3. Step 3: Cross multiply
    390,873.66x = 586,396.53 × 222,473.22
  4. Step 4: Simplify right side
    390,873.66x = 130,457,524,225.93
  5. Step 5: Solve for x
    x = 130,457,524,225.93/390,873.66
  6. Step 6: Final answer
    x = 333,758.80

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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.