Home / 257,021.29-385,557.75-88,519.42

Finding the Fourth Proportional to 257,021.29, 385,557.75 and 88,519.42

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Solution

The fourth proportional to 257,021.29, 385,557.75 and 88,519.42 is: 132,788.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,021.29 : 385,557.75 = 88,519.42 : x
  2. Step 2: Convert to fraction form
    257,021.29/385,557.75 = 88,519.42/x
  3. Step 3: Cross multiply
    257,021.29x = 385,557.75 × 88,519.42
  4. Step 4: Simplify right side
    257,021.29x = 34,129,348,406.51
  5. Step 5: Solve for x
    x = 34,129,348,406.51/257,021.29
  6. Step 6: Final answer
    x = 132,788.02

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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.