Home / 289,170,817.20-399,056,200.11-157,012,069.32

Finding the Fourth Proportional to 289,170,817.20, 399,056,200.11 and 157,012,069.32

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Solution

The fourth proportional to 289,170,817.20, 399,056,200.11 and 157,012,069.32 is: 216,676,912.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,170,817.20 : 399,056,200.11 = 157,012,069.32 : x
  2. Step 2: Convert to fraction form
    289,170,817.20/399,056,200.11 = 157,012,069.32/x
  3. Step 3: Cross multiply
    289,170,817.20x = 399,056,200.11 × 157,012,069.32
  4. Step 4: Simplify right side
    289,170,817.20x = 62,656,639,754,247,112
  5. Step 5: Solve for x
    x = 62,656,639,754,247,112/289,170,817.20
  6. Step 6: Final answer
    x = 216,676,912.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.