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Finding the Fourth Proportional to 397,374.05, 548,359.49 and 225,303.59

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Solution

The fourth proportional to 397,374.05, 548,359.49 and 225,303.59 is: 310,909.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,374.05 : 548,359.49 = 225,303.59 : x
  2. Step 2: Convert to fraction form
    397,374.05/548,359.49 = 225,303.59/x
  3. Step 3: Cross multiply
    397,374.05x = 548,359.49 × 225,303.59
  4. Step 4: Simplify right side
    397,374.05x = 123,547,357,839.25
  5. Step 5: Solve for x
    x = 123,547,357,839.25/397,374.05
  6. Step 6: Final answer
    x = 310,909.48

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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.