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Finding the Fourth Proportional to 316,573.88, 436,874.55 and 187,519.46

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Solution

The fourth proportional to 316,573.88, 436,874.55 and 187,519.46 is: 258,778.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,573.88 : 436,874.55 = 187,519.46 : x
  2. Step 2: Convert to fraction form
    316,573.88/436,874.55 = 187,519.46/x
  3. Step 3: Cross multiply
    316,573.88x = 436,874.55 × 187,519.46
  4. Step 4: Simplify right side
    316,573.88x = 81,922,479,703.74
  5. Step 5: Solve for x
    x = 81,922,479,703.74/316,573.88
  6. Step 6: Final answer
    x = 258,778.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.