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Finding the Fourth Proportional to 172,969.60, 260,037.60 and 147,308.80

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Solution

The fourth proportional to 172,969.60, 260,037.60 and 147,308.80 is: 221,459.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,969.60 : 260,037.60 = 147,308.80 : x
  2. Step 2: Convert to fraction form
    172,969.60/260,037.60 = 147,308.80/x
  3. Step 3: Cross multiply
    172,969.60x = 260,037.60 × 147,308.80
  4. Step 4: Simplify right side
    172,969.60x = 38,305,826,810.88
  5. Step 5: Solve for x
    x = 38,305,826,810.88/172,969.60
  6. Step 6: Final answer
    x = 221,459.88

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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.