Home / 398,246.40-549,655.20-228,591.36

Finding the Fourth Proportional to 398,246.40, 549,655.20 and 228,591.36

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Solution

The fourth proportional to 398,246.40, 549,655.20 and 228,591.36 is: 315,499.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,246.40 : 549,655.20 = 228,591.36 : x
  2. Step 2: Convert to fraction form
    398,246.40/549,655.20 = 228,591.36/x
  3. Step 3: Cross multiply
    398,246.40x = 549,655.20 × 228,591.36
  4. Step 4: Simplify right side
    398,246.40x = 125,646,429,699.07
  5. Step 5: Solve for x
    x = 125,646,429,699.07/398,246.40
  6. Step 6: Final answer
    x = 315,499.22

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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.