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Finding the Fourth Proportional to 287,325.20, 430,404.60 and 162,520.40

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Solution

The fourth proportional to 287,325.20, 430,404.60 and 162,520.40 is: 243,450.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,325.20 : 430,404.60 = 162,520.40 : x
  2. Step 2: Convert to fraction form
    287,325.20/430,404.60 = 162,520.40/x
  3. Step 3: Cross multiply
    287,325.20x = 430,404.60 × 162,520.40
  4. Step 4: Simplify right side
    287,325.20x = 69,949,527,753.84
  5. Step 5: Solve for x
    x = 69,949,527,753.84/287,325.20
  6. Step 6: Final answer
    x = 243,450.72

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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.