Home / 328,056,617.80-492,047,601.90-85,744,016.20

Finding the Fourth Proportional to 328,056,617.80, 492,047,601.90 and 85,744,016.20

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Solution

The fourth proportional to 328,056,617.80, 492,047,601.90 and 85,744,016.20 is: 128,606,268.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,056,617.80 : 492,047,601.90 = 85,744,016.20 : x
  2. Step 2: Convert to fraction form
    328,056,617.80/492,047,601.90 = 85,744,016.20/x
  3. Step 3: Cross multiply
    328,056,617.80x = 492,047,601.90 × 85,744,016.20
  4. Step 4: Simplify right side
    328,056,617.80x = 42,190,137,548,484,752
  5. Step 5: Solve for x
    x = 42,190,137,548,484,752/328,056,617.80
  6. Step 6: Final answer
    x = 128,606,268.73

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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.