Home / 261,816,780-392,781,859.92-100,258,721.76

Finding the Fourth Proportional to 261,816,780, 392,781,859.92 and 100,258,721.76

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Solution

The fourth proportional to 261,816,780, 392,781,859.92 and 100,258,721.76 is: 150,409,791.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,816,780 : 392,781,859.92 = 100,258,721.76 : x
  2. Step 2: Convert to fraction form
    261,816,780/392,781,859.92 = 100,258,721.76/x
  3. Step 3: Cross multiply
    261,816,780x = 392,781,859.92 × 100,258,721.76
  4. Step 4: Simplify right side
    261,816,780x = 39,379,807,206,094,576
  5. Step 5: Solve for x
    x = 39,379,807,206,094,576/261,816,780
  6. Step 6: Final answer
    x = 150,409,791.18

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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.