Home / 403,256.81-556,429.28-231,143.10

Finding the Fourth Proportional to 403,256.81, 556,429.28 and 231,143.10

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Solution

The fourth proportional to 403,256.81, 556,429.28 and 231,143.10 is: 318,940.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,256.81 : 556,429.28 = 231,143.10 : x
  2. Step 2: Convert to fraction form
    403,256.81/556,429.28 = 231,143.10/x
  3. Step 3: Cross multiply
    403,256.81x = 556,429.28 × 231,143.10
  4. Step 4: Simplify right side
    403,256.81x = 128,614,789,170.92
  5. Step 5: Solve for x
    x = 128,614,789,170.92/403,256.81
  6. Step 6: Final answer
    x = 318,940.16

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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.