Home / 207,390.10-311,007.38-89,000.50

Finding the Fourth Proportional to 207,390.10, 311,007.38 and 89,000.50

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Solution

The fourth proportional to 207,390.10, 311,007.38 and 89,000.50 is: 133,467.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,390.10 : 311,007.38 = 89,000.50 : x
  2. Step 2: Convert to fraction form
    207,390.10/311,007.38 = 89,000.50/x
  3. Step 3: Cross multiply
    207,390.10x = 311,007.38 × 89,000.50
  4. Step 4: Simplify right side
    207,390.10x = 27,679,812,323.69
  5. Step 5: Solve for x
    x = 27,679,812,323.69/207,390.10
  6. Step 6: Final answer
    x = 133,467.38

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1.5x scale

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.