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Finding the Fourth Proportional to 172,072.80, 257,590.80 and 153,410.40

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Solution

The fourth proportional to 172,072.80, 257,590.80 and 153,410.40 is: 229,653.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,072.80 : 257,590.80 = 153,410.40 : x
  2. Step 2: Convert to fraction form
    172,072.80/257,590.80 = 153,410.40/x
  3. Step 3: Cross multiply
    172,072.80x = 257,590.80 × 153,410.40
  4. Step 4: Simplify right side
    172,072.80x = 39,517,107,664.32
  5. Step 5: Solve for x
    x = 39,517,107,664.32/172,072.80
  6. Step 6: Final answer
    x = 229,653.42

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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.