Home / 438,069.20-657,125.40-228,117.20

Finding the Fourth Proportional to 438,069.20, 657,125.40 and 228,117.20

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Solution

The fourth proportional to 438,069.20, 657,125.40 and 228,117.20 is: 342,187.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,069.20 : 657,125.40 = 228,117.20 : x
  2. Step 2: Convert to fraction form
    438,069.20/657,125.40 = 228,117.20/x
  3. Step 3: Cross multiply
    438,069.20x = 657,125.40 × 228,117.20
  4. Step 4: Simplify right side
    438,069.20x = 149,901,606,296.88
  5. Step 5: Solve for x
    x = 149,901,606,296.88/438,069.20
  6. Step 6: Final answer
    x = 342,187.05

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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.