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Finding the Fourth Proportional to 397,374.06, 548,359.50 and 225,303.60

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Solution

The fourth proportional to 397,374.06, 548,359.50 and 225,303.60 is: 310,909.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,374.06 : 548,359.50 = 225,303.60 : x
  2. Step 2: Convert to fraction form
    397,374.06/548,359.50 = 225,303.60/x
  3. Step 3: Cross multiply
    397,374.06x = 548,359.50 × 225,303.60
  4. Step 4: Simplify right side
    397,374.06x = 123,547,369,444.20
  5. Step 5: Solve for x
    x = 123,547,369,444.20/397,374.06
  6. Step 6: Final answer
    x = 310,909.50

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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.