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Finding the Fourth Proportional to 247,007.91, 340,866.47 and 139,575.63

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Solution

The fourth proportional to 247,007.91, 340,866.47 and 139,575.63 is: 192,611.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,007.91 : 340,866.47 = 139,575.63 : x
  2. Step 2: Convert to fraction form
    247,007.91/340,866.47 = 139,575.63/x
  3. Step 3: Cross multiply
    247,007.91x = 340,866.47 × 139,575.63
  4. Step 4: Simplify right side
    247,007.91x = 47,576,651,598.25
  5. Step 5: Solve for x
    x = 47,576,651,598.25/247,007.91
  6. Step 6: Final answer
    x = 192,611.85

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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.