Home / 207,787,511.40-311,475,689.10-98,420,452.80

Finding the Fourth Proportional to 207,787,511.40, 311,475,689.10 and 98,420,452.80

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Solution

The fourth proportional to 207,787,511.40, 311,475,689.10 and 98,420,452.80 is: 147,533,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,787,511.40 : 311,475,689.10 = 98,420,452.80 : x
  2. Step 2: Convert to fraction form
    207,787,511.40/311,475,689.10 = 98,420,452.80/x
  3. Step 3: Cross multiply
    207,787,511.40x = 311,475,689.10 × 98,420,452.80
  4. Step 4: Simplify right side
    207,787,511.40x = 30,655,578,357,414,024
  5. Step 5: Solve for x
    x = 30,655,578,357,414,024/207,787,511.40
  6. Step 6: Final answer
    x = 147,533,305.30

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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.