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Finding the Fourth Proportional to 398,784.44, 550,303.11 and 237,635.90

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Solution

The fourth proportional to 398,784.44, 550,303.11 and 237,635.90 is: 327,925.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,784.44 : 550,303.11 = 237,635.90 : x
  2. Step 2: Convert to fraction form
    398,784.44/550,303.11 = 237,635.90/x
  3. Step 3: Cross multiply
    398,784.44x = 550,303.11 × 237,635.90
  4. Step 4: Simplify right side
    398,784.44x = 130,771,774,817.65
  5. Step 5: Solve for x
    x = 130,771,774,817.65/398,784.44
  6. Step 6: Final answer
    x = 327,925.97

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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.