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Finding the Fourth Proportional to 392,794,690.96, 589,153,779.18 and 159,639,382.36

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Solution

The fourth proportional to 392,794,690.96, 589,153,779.18 and 159,639,382.36 is: 239,443,525.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,794,690.96 : 589,153,779.18 = 159,639,382.36 : x
  2. Step 2: Convert to fraction form
    392,794,690.96/589,153,779.18 = 159,639,382.36/x
  3. Step 3: Cross multiply
    392,794,690.96x = 589,153,779.18 × 159,639,382.36
  4. Step 4: Simplify right side
    392,794,690.96x = 94,052,145,423,355,024
  5. Step 5: Solve for x
    x = 94,052,145,423,355,024/392,794,690.96
  6. Step 6: Final answer
    x = 239,443,525.05

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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.