Home / 261,468,015.40-392,202,023.10-220,653,346.60

Finding the Fourth Proportional to 261,468,015.40, 392,202,023.10 and 220,653,346.60

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Solution

The fourth proportional to 261,468,015.40, 392,202,023.10 and 220,653,346.60 is: 330,980,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,468,015.40 : 392,202,023.10 = 220,653,346.60 : x
  2. Step 2: Convert to fraction form
    261,468,015.40/392,202,023.10 = 220,653,346.60/x
  3. Step 3: Cross multiply
    261,468,015.40x = 392,202,023.10 × 220,653,346.60
  4. Step 4: Simplify right side
    261,468,015.40x = 86,540,688,940,305,504
  5. Step 5: Solve for x
    x = 86,540,688,940,305,504/261,468,015.40
  6. Step 6: Final answer
    x = 330,980,019.90

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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.