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Finding the Fourth Proportional to 572,209.83, 858,433.05 and 187,987.80

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Solution

The fourth proportional to 572,209.83, 858,433.05 and 187,987.80 is: 282,020.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,209.83 : 858,433.05 = 187,987.80 : x
  2. Step 2: Convert to fraction form
    572,209.83/858,433.05 = 187,987.80/x
  3. Step 3: Cross multiply
    572,209.83x = 858,433.05 × 187,987.80
  4. Step 4: Simplify right side
    572,209.83x = 161,374,940,516.79
  5. Step 5: Solve for x
    x = 161,374,940,516.79/572,209.83
  6. Step 6: Final answer
    x = 282,020.57

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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.