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Finding the Fourth Proportional to 398,246.40, 597,369.60 and 117,763.20

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Solution

The fourth proportional to 398,246.40, 597,369.60 and 117,763.20 is: 176,644.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,246.40 : 597,369.60 = 117,763.20 : x
  2. Step 2: Convert to fraction form
    398,246.40/597,369.60 = 117,763.20/x
  3. Step 3: Cross multiply
    398,246.40x = 597,369.60 × 117,763.20
  4. Step 4: Simplify right side
    398,246.40x = 70,348,155,678.72
  5. Step 5: Solve for x
    x = 70,348,155,678.72/398,246.40
  6. Step 6: Final answer
    x = 176,644.80

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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.