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Finding the Fourth Proportional to 572,085.89, 858,100.94 and 212,326.77

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Solution

The fourth proportional to 572,085.89, 858,100.94 and 212,326.77 is: 318,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,085.89 : 858,100.94 = 212,326.77 : x
  2. Step 2: Convert to fraction form
    572,085.89/858,100.94 = 212,326.77/x
  3. Step 3: Cross multiply
    572,085.89x = 858,100.94 × 212,326.77
  4. Step 4: Simplify right side
    572,085.89x = 182,197,799,049.82
  5. Step 5: Solve for x
    x = 182,197,799,049.82/572,085.89
  6. Step 6: Final answer
    x = 318,479.80

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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.