Home / 328,543,105.20-492,782,630.40-86,206,009.20

Finding the Fourth Proportional to 328,543,105.20, 492,782,630.40 and 86,206,009.20

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Solution

The fourth proportional to 328,543,105.20, 492,782,630.40 and 86,206,009.20 is: 129,300,610.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,543,105.20 : 492,782,630.40 = 86,206,009.20 : x
  2. Step 2: Convert to fraction form
    328,543,105.20/492,782,630.40 = 86,206,009.20/x
  3. Step 3: Cross multiply
    328,543,105.20x = 492,782,630.40 × 86,206,009.20
  4. Step 4: Simplify right side
    328,543,105.20x = 42,480,823,969,862,600
  5. Step 5: Solve for x
    x = 42,480,823,969,862,600/328,543,105.20
  6. Step 6: Final answer
    x = 129,300,610.17

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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.