Home / 398,371.27-549,738.40-223,936.15

Finding the Fourth Proportional to 398,371.27, 549,738.40 and 223,936.15

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Solution

The fourth proportional to 398,371.27, 549,738.40 and 223,936.15 is: 309,024.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,371.27 : 549,738.40 = 223,936.15 : x
  2. Step 2: Convert to fraction form
    398,371.27/549,738.40 = 223,936.15/x
  3. Step 3: Cross multiply
    398,371.27x = 549,738.40 × 223,936.15
  4. Step 4: Simplify right side
    398,371.27x = 123,106,300,803.16
  5. Step 5: Solve for x
    x = 123,106,300,803.16/398,371.27
  6. Step 6: Final answer
    x = 309,024.04

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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.