Home / 438,079.20-657,140.40-228,127.20

Finding the Fourth Proportional to 438,079.20, 657,140.40 and 228,127.20

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Solution

The fourth proportional to 438,079.20, 657,140.40 and 228,127.20 is: 342,202.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,079.20 : 657,140.40 = 228,127.20 : x
  2. Step 2: Convert to fraction form
    438,079.20/657,140.40 = 228,127.20/x
  3. Step 3: Cross multiply
    438,079.20x = 657,140.40 × 228,127.20
  4. Step 4: Simplify right side
    438,079.20x = 149,911,599,458.88
  5. Step 5: Solve for x
    x = 149,911,599,458.88/438,079.20
  6. Step 6: Final answer
    x = 342,202.05

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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.