Home / 261,538,897.20-392,308,345.80-220,724,228.40

Finding the Fourth Proportional to 261,538,897.20, 392,308,345.80 and 220,724,228.40

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Solution

The fourth proportional to 261,538,897.20, 392,308,345.80 and 220,724,228.40 is: 331,086,342.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,538,897.20 : 392,308,345.80 = 220,724,228.40 : x
  2. Step 2: Convert to fraction form
    261,538,897.20/392,308,345.80 = 220,724,228.40/x
  3. Step 3: Cross multiply
    261,538,897.20x = 392,308,345.80 × 220,724,228.40
  4. Step 4: Simplify right side
    261,538,897.20x = 86,591,956,921,585,392
  5. Step 5: Solve for x
    x = 86,591,956,921,585,392/261,538,897.20
  6. Step 6: Final answer
    x = 331,086,342.60

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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.