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Finding the Fourth Proportional to 368,963.60, 553,445.40 and 132,330.20

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Solution

The fourth proportional to 368,963.60, 553,445.40 and 132,330.20 is: 198,495.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,963.60 : 553,445.40 = 132,330.20 : x
  2. Step 2: Convert to fraction form
    368,963.60/553,445.40 = 132,330.20/x
  3. Step 3: Cross multiply
    368,963.60x = 553,445.40 × 132,330.20
  4. Step 4: Simplify right side
    368,963.60x = 73,237,540,471.08
  5. Step 5: Solve for x
    x = 73,237,540,471.08/368,963.60
  6. Step 6: Final answer
    x = 198,495.30

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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.