Home / 272,421.20-408,631.80-197,188.40

Finding the Fourth Proportional to 272,421.20, 408,631.80 and 197,188.40

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Solution

The fourth proportional to 272,421.20, 408,631.80 and 197,188.40 is: 295,782.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,421.20 : 408,631.80 = 197,188.40 : x
  2. Step 2: Convert to fraction form
    272,421.20/408,631.80 = 197,188.40/x
  3. Step 3: Cross multiply
    272,421.20x = 408,631.80 × 197,188.40
  4. Step 4: Simplify right side
    272,421.20x = 80,577,450,831.12
  5. Step 5: Solve for x
    x = 80,577,450,831.12/272,421.20
  6. Step 6: Final answer
    x = 295,782.60

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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.