Home / 268,927.50-371,221.47-211,416.78

Finding the Fourth Proportional to 268,927.50, 371,221.47 and 211,416.78

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Solution

The fourth proportional to 268,927.50, 371,221.47 and 211,416.78 is: 291,834.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,927.50 : 371,221.47 = 211,416.78 : x
  2. Step 2: Convert to fraction form
    268,927.50/371,221.47 = 211,416.78/x
  3. Step 3: Cross multiply
    268,927.50x = 371,221.47 × 211,416.78
  4. Step 4: Simplify right side
    268,927.50x = 78,482,447,854.27
  5. Step 5: Solve for x
    x = 78,482,447,854.27/268,927.50
  6. Step 6: Final answer
    x = 291,834.97

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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.