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Finding the Fourth Proportional to 145,004.40, 217,506.60 and 131,007.60

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Solution

The fourth proportional to 145,004.40, 217,506.60 and 131,007.60 is: 196,511.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,004.40 : 217,506.60 = 131,007.60 : x
  2. Step 2: Convert to fraction form
    145,004.40/217,506.60 = 131,007.60/x
  3. Step 3: Cross multiply
    145,004.40x = 217,506.60 × 131,007.60
  4. Step 4: Simplify right side
    145,004.40x = 28,495,017,650.16
  5. Step 5: Solve for x
    x = 28,495,017,650.16/145,004.40
  6. Step 6: Final answer
    x = 196,511.40

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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.