Home / 438,186.20-657,300.90-228,234.20

Finding the Fourth Proportional to 438,186.20, 657,300.90 and 228,234.20

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Solution

The fourth proportional to 438,186.20, 657,300.90 and 228,234.20 is: 342,362.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,186.20 : 657,300.90 = 228,234.20 : x
  2. Step 2: Convert to fraction form
    438,186.20/657,300.90 = 228,234.20/x
  3. Step 3: Cross multiply
    438,186.20x = 657,300.90 × 228,234.20
  4. Step 4: Simplify right side
    438,186.20x = 150,018,545,070.78
  5. Step 5: Solve for x
    x = 150,018,545,070.78/438,186.20
  6. Step 6: Final answer
    x = 342,362.55

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1.5x scale

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.