Home / 315,222.12-434,946.96-187,909.56

Finding the Fourth Proportional to 315,222.12, 434,946.96 and 187,909.56

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Solution

The fourth proportional to 315,222.12, 434,946.96 and 187,909.56 is: 259,279.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,222.12 : 434,946.96 = 187,909.56 : x
  2. Step 2: Convert to fraction form
    315,222.12/434,946.96 = 187,909.56/x
  3. Step 3: Cross multiply
    315,222.12x = 434,946.96 × 187,909.56
  4. Step 4: Simplify right side
    315,222.12x = 81,730,691,876.94
  5. Step 5: Solve for x
    x = 81,730,691,876.94/315,222.12
  6. Step 6: Final answer
    x = 259,279.68

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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.