Home / 261,538,905.20-392,308,357.80-220,724,236.40

Finding the Fourth Proportional to 261,538,905.20, 392,308,357.80 and 220,724,236.40

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Solution

The fourth proportional to 261,538,905.20, 392,308,357.80 and 220,724,236.40 is: 331,086,354.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,538,905.20 : 392,308,357.80 = 220,724,236.40 : x
  2. Step 2: Convert to fraction form
    261,538,905.20/392,308,357.80 = 220,724,236.40/x
  3. Step 3: Cross multiply
    261,538,905.20x = 392,308,357.80 × 220,724,236.40
  4. Step 4: Simplify right side
    261,538,905.20x = 86,591,962,708,742,992
  5. Step 5: Solve for x
    x = 86,591,962,708,742,992/261,538,905.20
  6. Step 6: Final answer
    x = 331,086,354.60

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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.