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Finding the Fourth Proportional to 290,574.97, 436,518.59 and 172,323.88

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Solution

The fourth proportional to 290,574.97, 436,518.59 and 172,323.88 is: 258,874.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,574.97 : 436,518.59 = 172,323.88 : x
  2. Step 2: Convert to fraction form
    290,574.97/436,518.59 = 172,323.88/x
  3. Step 3: Cross multiply
    290,574.97x = 436,518.59 × 172,323.88
  4. Step 4: Simplify right side
    290,574.97x = 75,222,577,120.93
  5. Step 5: Solve for x
    x = 75,222,577,120.93/290,574.97
  6. Step 6: Final answer
    x = 258,874.94

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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.