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Finding the Fourth Proportional to 172,403.80, 258,605.70 and 144,847.60

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Solution

The fourth proportional to 172,403.80, 258,605.70 and 144,847.60 is: 217,271.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,403.80 : 258,605.70 = 144,847.60 : x
  2. Step 2: Convert to fraction form
    172,403.80/258,605.70 = 144,847.60/x
  3. Step 3: Cross multiply
    172,403.80x = 258,605.70 × 144,847.60
  4. Step 4: Simplify right side
    172,403.80x = 37,458,414,991.32
  5. Step 5: Solve for x
    x = 37,458,414,991.32/172,403.80
  6. Step 6: Final answer
    x = 217,271.40

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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.