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Finding the Fourth Proportional to 579,514.88, 869,263.09 and 158,790.76

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Solution

The fourth proportional to 579,514.88, 869,263.09 and 158,790.76 is: 238,183.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,514.88 : 869,263.09 = 158,790.76 : x
  2. Step 2: Convert to fraction form
    579,514.88/869,263.09 = 158,790.76/x
  3. Step 3: Cross multiply
    579,514.88x = 869,263.09 × 158,790.76
  4. Step 4: Simplify right side
    579,514.88x = 138,030,944,130.91
  5. Step 5: Solve for x
    x = 138,030,944,130.91/579,514.88
  6. Step 6: Final answer
    x = 238,183.61

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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.