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Finding the Fourth Proportional to 398,072.40, 597,108.60 and 117,585.60

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Solution

The fourth proportional to 398,072.40, 597,108.60 and 117,585.60 is: 176,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,072.40 : 597,108.60 = 117,585.60 : x
  2. Step 2: Convert to fraction form
    398,072.40/597,108.60 = 117,585.60/x
  3. Step 3: Cross multiply
    398,072.40x = 597,108.60 × 117,585.60
  4. Step 4: Simplify right side
    398,072.40x = 70,211,372,996.16
  5. Step 5: Solve for x
    x = 70,211,372,996.16/398,072.40
  6. Step 6: Final answer
    x = 176,378.40

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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.