Home / 257,297.84-385,943.28-115,105.52

Finding the Fourth Proportional to 257,297.84, 385,943.28 and 115,105.52

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Solution

The fourth proportional to 257,297.84, 385,943.28 and 115,105.52 is: 172,656.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,297.84 : 385,943.28 = 115,105.52 : x
  2. Step 2: Convert to fraction form
    257,297.84/385,943.28 = 115,105.52/x
  3. Step 3: Cross multiply
    257,297.84x = 385,943.28 × 115,105.52
  4. Step 4: Simplify right side
    257,297.84x = 44,424,201,934.91
  5. Step 5: Solve for x
    x = 44,424,201,934.91/257,297.84
  6. Step 6: Final answer
    x = 172,656.72

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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.