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Finding the Fourth Proportional to 287,078.40, 430,617.60 and 182,102.40

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Solution

The fourth proportional to 287,078.40, 430,617.60 and 182,102.40 is: 273,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,078.40 : 430,617.60 = 182,102.40 : x
  2. Step 2: Convert to fraction form
    287,078.40/430,617.60 = 182,102.40/x
  3. Step 3: Cross multiply
    287,078.40x = 430,617.60 × 182,102.40
  4. Step 4: Simplify right side
    287,078.40x = 78,416,498,442.24
  5. Step 5: Solve for x
    x = 78,416,498,442.24/287,078.40
  6. Step 6: Final answer
    x = 273,153.60

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1.5x scale

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.