Home / 328,543,461.20-492,783,164.40-86,206,365.20

Finding the Fourth Proportional to 328,543,461.20, 492,783,164.40 and 86,206,365.20

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Solution

The fourth proportional to 328,543,461.20, 492,783,164.40 and 86,206,365.20 is: 129,301,144.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,543,461.20 : 492,783,164.40 = 86,206,365.20 : x
  2. Step 2: Convert to fraction form
    328,543,461.20/492,783,164.40 = 86,206,365.20/x
  3. Step 3: Cross multiply
    328,543,461.20x = 492,783,164.40 × 86,206,365.20
  4. Step 4: Simplify right side
    328,543,461.20x = 42,481,045,434,678,040
  5. Step 5: Solve for x
    x = 42,481,045,434,678,040/328,543,461.20
  6. Step 6: Final answer
    x = 129,301,144.15

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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.