Home / 257,811.40-385,623.60-231,348.70

Finding the Fourth Proportional to 257,811.40, 385,623.60 and 231,348.70

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Solution

The fourth proportional to 257,811.40, 385,623.60 and 231,348.70 is: 346,041.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,811.40 : 385,623.60 = 231,348.70 : x
  2. Step 2: Convert to fraction form
    257,811.40/385,623.60 = 231,348.70/x
  3. Step 3: Cross multiply
    257,811.40x = 385,623.60 × 231,348.70
  4. Step 4: Simplify right side
    257,811.40x = 89,213,518,549.32
  5. Step 5: Solve for x
    x = 89,213,518,549.32/257,811.40
  6. Step 6: Final answer
    x = 346,041.79

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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.