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Finding the Fourth Proportional to 207,984.69, 287,019.09 and 112,491.54

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Solution

The fourth proportional to 207,984.69, 287,019.09 and 112,491.54 is: 155,238.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,984.69 : 287,019.09 = 112,491.54 : x
  2. Step 2: Convert to fraction form
    207,984.69/287,019.09 = 112,491.54/x
  3. Step 3: Cross multiply
    207,984.69x = 287,019.09 × 112,491.54
  4. Step 4: Simplify right side
    207,984.69x = 32,287,219,443.50
  5. Step 5: Solve for x
    x = 32,287,219,443.50/207,984.69
  6. Step 6: Final answer
    x = 155,238.44

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1.5x scale

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.