Home / 328,012,899.20-492,025,180.80-97,984,822.40

Finding the Fourth Proportional to 328,012,899.20, 492,025,180.80 and 97,984,822.40

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Solution

The fourth proportional to 328,012,899.20, 492,025,180.80 and 97,984,822.40 is: 146,978,975.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,012,899.20 : 492,025,180.80 = 97,984,822.40 : x
  2. Step 2: Convert to fraction form
    328,012,899.20/492,025,180.80 = 97,984,822.40/x
  3. Step 3: Cross multiply
    328,012,899.20x = 492,025,180.80 × 97,984,822.40
  4. Step 4: Simplify right side
    328,012,899.20x = 48,210,999,957,015,896
  5. Step 5: Solve for x
    x = 48,210,999,957,015,896/328,012,899.20
  6. Step 6: Final answer
    x = 146,978,975.75

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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.