Home / 257,329.47-385,991.40-105,492.68

Finding the Fourth Proportional to 257,329.47, 385,991.40 and 105,492.68

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Solution

The fourth proportional to 257,329.47, 385,991.40 and 105,492.68 is: 158,237.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,329.47 : 385,991.40 = 105,492.68 : x
  2. Step 2: Convert to fraction form
    257,329.47/385,991.40 = 105,492.68/x
  3. Step 3: Cross multiply
    257,329.47x = 385,991.40 × 105,492.68
  4. Step 4: Simplify right side
    257,329.47x = 40,719,266,859.36
  5. Step 5: Solve for x
    x = 40,719,266,859.36/257,329.47
  6. Step 6: Final answer
    x = 158,237.87

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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.