Home / 381,721,009.20-572,749,475.40-177,143,780.40

Finding the Fourth Proportional to 381,721,009.20, 572,749,475.40 and 177,143,780.40

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Solution

The fourth proportional to 381,721,009.20, 572,749,475.40 and 177,143,780.40 is: 265,793,615.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,721,009.20 : 572,749,475.40 = 177,143,780.40 : x
  2. Step 2: Convert to fraction form
    381,721,009.20/572,749,475.40 = 177,143,780.40/x
  3. Step 3: Cross multiply
    381,721,009.20x = 572,749,475.40 × 177,143,780.40
  4. Step 4: Simplify right side
    381,721,009.20x = 101,459,007,294,472,800
  5. Step 5: Solve for x
    x = 101,459,007,294,472,800/381,721,009.20
  6. Step 6: Final answer
    x = 265,793,615.88

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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.