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Finding the Fourth Proportional to 316,011.62, 435,836.22 and 225,338.60

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Solution

The fourth proportional to 316,011.62, 435,836.22 and 225,338.60 is: 310,782.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,011.62 : 435,836.22 = 225,338.60 : x
  2. Step 2: Convert to fraction form
    316,011.62/435,836.22 = 225,338.60/x
  3. Step 3: Cross multiply
    316,011.62x = 435,836.22 × 225,338.60
  4. Step 4: Simplify right side
    316,011.62x = 98,210,723,644.09
  5. Step 5: Solve for x
    x = 98,210,723,644.09/316,011.62
  6. Step 6: Final answer
    x = 310,782.00

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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.