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Finding the Fourth Proportional to 572,265, 858,550.59 and 198,288

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Solution

The fourth proportional to 572,265, 858,550.59 and 198,288 is: 297,485.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,265 : 858,550.59 = 198,288 : x
  2. Step 2: Convert to fraction form
    572,265/858,550.59 = 198,288/x
  3. Step 3: Cross multiply
    572,265x = 858,550.59 × 198,288
  4. Step 4: Simplify right side
    572,265x = 170,240,279,389.92
  5. Step 5: Solve for x
    x = 170,240,279,389.92/572,265
  6. Step 6: Final answer
    x = 297,485.05

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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.