Home / 371,914.29-513,488.88-285,719.76

Finding the Fourth Proportional to 371,914.29, 513,488.88 and 285,719.76

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Solution

The fourth proportional to 371,914.29, 513,488.88 and 285,719.76 is: 394,483.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,914.29 : 513,488.88 = 285,719.76 : x
  2. Step 2: Convert to fraction form
    371,914.29/513,488.88 = 285,719.76/x
  3. Step 3: Cross multiply
    371,914.29x = 513,488.88 × 285,719.76
  4. Step 4: Simplify right side
    371,914.29x = 146,713,919,556.27
  5. Step 5: Solve for x
    x = 146,713,919,556.27/371,914.29
  6. Step 6: Final answer
    x = 394,483.15

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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.